This is part of a series on nonviolent protest methods, which explains approaches and provides inspirational examples from history. For additional resources, please explore the Museum of Protest’s activist guides and view items in the collection.

A suppliers’ and handlers’ boycott is a form of economic boycott in which those who normally supply or transport goods refuse to handle certain products or services as a means of protest.

This means the people in the middle of the supply chain – such as shippers, truck drivers, warehouse distributors, or retail suppliers – stop delivering goods to or from a target entity. The goal is to disrupt the target’s economic activities by cutting off the flow of critical supplies or services, thereby creating pressure for change.

This method functions as a type of nonviolent noncooperation: instead of actively sabotaging or destroying goods, participants passively withhold their labor and services. The boycott can be directed against a company, government, or other institution whose policies or actions the protesters oppose. The refusal to handle goods may occur in support of another group’s strike, in solidarity with an oppressed population, or to avoid complicity in activities deemed immoral.

According to scholar Gene Sharp, the reasons for such a boycott often include objection to how the goods will be used, (for example, supplying a war effort or supporting a repressive regime), objection to the intrinsic nature of the goods (such as ethically controversial products), or objection to the conditions under which the goods were produced (for instance, slave labor, apartheid, sweatshop labor, or other oppressive conditions), as documented on Dokumen.pub and bmartin.cc. By refusing to handle the goods, suppliers and handlers deny the opponent the materials or distribution channels needed for their normal operations, thereby applying economic pressure without any violent action.

Strategies for Effective Use

Implementing a suppliers’ and handlers’ boycott requires planning, coordination, and resilience. Here are key strategies to maximize its impact:

Careful Coordination

Because this method involves multiple players in a supply chain, organizers must coordinate among all the “middlemen” willing to participate. This often means working through labor unions, professional associations, or informal networks of workers in shipping, trucking, rail, or other relevant industries. For example, protest leaders might secure a commitment from dockworkers at various ports or from truck drivers at key distribution hubs. A unified plan ensures that the boycott is widespread enough to cause disruption.

Coordination also includes timing the action for when it will hurt most (such as when crucial shipments are expected) and ensuring enough participants follow through so that the target cannot easily find alternative suppliers. In one historical case, British dockworkers in 1920 only succeeded in stopping an arms shipment after their union local collectively agreed to refuse the work – an action backed by union officials, according to Libcom.org. Solidarity and unity of purpose among the suppliers/handlers are essential.

Clear Communication and Public Support

Successful boycotts of this kind are usually buoyed by strong communication both internally and externally. Internally, participants need to understand the goals and be kept motivated. Externally, the broader public and other stakeholders should be informed about why the boycott is happening, to build sympathy and prevent the opponent from isolating or vilifying the boycott participants.

Often, activists will publicize the boycott through media or public demonstrations, framing it as a principled stand (for example, refusing to deliver goods that prop up an unjust policy). Communication can also involve pre-negotiation with allies – for instance, informing sympathetic businesses or community groups so they can lend support (such as setting up supportive picket lines or offering legal aid if needed).

During the 1920 “Hands Off Russia” campaign, activists spent months educating and agitating dockworkers, distributing literature and speaking with workers’ families to build support for refusing to load munitions destined for a foreign war, as reported on Libcom.org. That groundwork paid off when the time came to act. Likewise, in a 1962 boycott of South African goods in San Francisco, civil rights groups (NAACP, CORE) worked with longshoremen to picket the docks, ensuring workers knew the moral reasons behind the action, according to FoundSF. Clear messaging helps frame the boycott as a righteous nonviolent protest, which can attract community support and discourage strike-breaking.

Maintaining Solidarity and Resilience Against Countermeasures

Those engaging in a suppliers’ boycott must anticipate pushback and plan to stay resilient. The opponent may try to break the boycott by finding replacement workers (strikebreakers), rerouting shipments through other channels, or taking legal action against participants. To withstand these pressures, it’s important to maintain solidarity – “all stick together” so that the target cannot simply shift the supply line elsewhere. Strikers or boycotting workers often establish mutual support funds or get backing from their unions to endure lost wages during the action.

Legal resilience is also critical: boycotters should be aware of laws that might be used against them (such as injunctions or anti-boycott regulations) and have contingency plans. In some historical instances, governments or companies have obtained court orders to force resumption of deliveries. For example, during a lengthy 1984 longshore boycott of South African cargo in California, a U.S. federal judge eventually issued an injunction threatening heavy fines and jail time, which forced the longshore union to relent and unload the cargo after 11 days, as documented by FoundSF.

Knowing such risks, organizers can prepare by engaging legal observers, rallying public opinion (so that any crackdown looks like an attack on a just cause), and making sure that the boycott’s objectives are well-understood by the public. Another resilience tactic is to expand the boycott if needed – if one group of handlers is replaced, organizers might call on others (like railway workers, truckers, or warehouse staff in the next stage of distribution) to honor the boycott as well. Building a broad coalition makes the action harder to circumvent.

Alliances and Dual Pressure

A suppliers’ and handlers’ boycott can be especially powerful when combined with other types of noncooperation. Coordinating it alongside a consumer boycott (where the public refuses to buy the product in question) doubles the economic pressure on the target. It also creates a feedback loop: the absence of goods on shelves (from the handlers’ boycott) reinforces consumers’ refusal to buy, and vice versa.

Alliances with producers can matter too – occasionally, producers (or farmers/workers at the source) might also join in refusing to sell the goods in question, squeezing the target from both ends. While it’s not always possible to get producers, handlers, and consumers all on the same page, even two out of three can significantly isolate the target economically.

Additionally, having community groups, religious organizations, or student movements publicly support the boycott can keep morale high and add social pressure. Visibility is a strategy: staging demonstrations or pickets at ports, warehouses, or logistics centers (with permission or in parallel to the workers’ boycott) draws media attention and makes it harder for the opponent to quietly subvert the boycott. During the anti-apartheid struggles, for instance, activists often organized rallies at harbors where longshoremen were refusing South African cargo; hundreds of people showed up to sing, chant, and support the dockworkers’ stance, according to FoundSF. This kind of community alliance can dissuade authorities from intervening harshly and encourages the boycotting workers to hold firm.

Setting Clear Goals and Exit Conditions

Finally, strategy should include clarity on what outcome is desired and when the boycott might be lifted. Nonviolent campaigns should communicate their demands to the opponent – for example, “We will refuse to handle your products until you end policy X or meet with our representatives to negotiate.” Having a clear demand gives the opponent an incentive to change (to get their supply line back) and helps maintain unity among boycotters (who know what they’re fighting for).

It’s also wise to decide in advance under what conditions the boycott would end: Is it time-limited and symbolic, or indefinite until demands are met? In some cases, a short-term boycott can make a dramatic point and then pause, to give the opponent a chance to respond. In other cases, a prolonged boycott might be necessary to force real concessions. Knowing this in advance prevents confusion among participants.

For example, the 1984 San Francisco port boycott was initially planned to target one incoming ship’s cargo – the union local voted to “unload all of the ship’s cargo except the South African goods,” as noted by FoundSF – which they did, and then they sustained the stoppage on that cargo for days. They had effectively decided their limit (not handling apartheid goods on that ship) and stuck to it. Having that plan meant everyone understood what victory looked like (the unwanted cargo sitting untouched), and when legal pressure mounted, they could withdraw having made their point, according to FoundSF. Clarity in goals helps the group declare success or determine next steps without internal conflict.

By using these strategies – coordination, communication, solidarity, alliances, and clear goals – groups can maximize the impact of a suppliers’ and handlers’ boycott while maintaining nonviolent discipline. The following historical examples illustrate how this method has been applied in practice.

Historical Examples

Activists picket outside a San Francisco port in 1962, urging longshoremen (ILWU) not to handle South African cargo. These examples from different eras show suppliers’ and handlers’ boycotts in action, demonstrating when, where, and how they were used, and what they achieved.

Dockworkers on the “Jolly George” (Britain, 1920)

One of the earliest famous cases occurred in London in 1920, during the “Hands Off Russia!” campaign. British dockworkers refused to load weapons onto a ship called the SS Jolly George because the arms were destined for Polish forces fighting in the Soviet Russian Civil War, as reported on Libcom.org.

For months prior, socialist organizers Sylvia Pankhurst and Harry Pollitt had been mobilizing the dockworkers and their families – circulating pro-peace literature, holding meetings, and even involving workers’ wives in urging their husbands not to load munitions that would “crush the Russian Revolution,” according to Libcom.org. This preparatory work meant that when the ship was being loaded in May 1920, the coal heavers and dock laborers collectively boycotted the task. They simply refused to fuel the ship or load the crates of ammunition. The dockworkers’ union backed their action, giving it further legitimacy, as documented on Libcom.org.

The impact was dramatic. The munitions had to be unloaded back onto the dock, and a small sticker reading “Hands Off Russia” was placed on one of the cases – a symbolic message that was reported around the world, according to Libcom.org. Labor leader Harry Pollitt later recalled the event as a rousing success that “gave a new inspiration to the whole working class movement,” as noted on Libcom.org.

In practical terms, this suppliers’ boycott prevented British arms from reaching the Polish front, signaling that British workers would not be complicit in fighting the Russian Revolution. The British government, already facing widespread war-weariness, felt the pressure. According to historical accounts, even Winston Churchill (then War Secretary) was forced to reconsider further military intervention against the Bolsheviks due to the “hostility of the workers.” In fact, support for armed intervention eroded in the UK, and no full-scale campaign against Soviet Russia materialized, as reported on Libcom.org.

While it’s hard to quantify the exact effect on policy, the Jolly George incident clearly hindered Britain’s ability to aid the anti-Bolshevik forces. It became a celebrated example of international solidarity: workers in one country impeded a war in another by using nonviolent leverage at the docks.

The key takeaways from this example are the importance of preparation (the months of organizing), the power of union support, and the global attention a well-timed boycott can garner.

Longshoremen vs. Apartheid (San Francisco, 1962 & 1984)

Another prominent series of suppliers’ and handlers’ boycotts took place on the West Coast of the United States, led by the International Longshore and Warehouse Union (ILWU), in protest against South Africa’s apartheid regime. Apartheid, the system of racial segregation and oppression in South Africa, was a major target of international activism in the late 20th century. Long before official government sanctions, union dockworkers took it upon themselves to refuse handling South African goods.

1962 – The First U.S. Anti-Apartheid Boycott by Workers

In December 1962, ILWU Local 10 longshoremen in San Francisco made history by refusing to unload cargo from a Dutch ship, the SS Raki, which carried goods from South Africa, according to FoundSF. This action was carefully planned in advance. The American Committee on Africa (a civil rights group) and local activists arranged a community picket line at Pier 19, knowing that union members would honor the picket and not cross it, as documented by FoundSF.

Over a hundred longshore workers participated by simply standing down and not unloading the ship’s South African asbestos, coffee, and hemp, according to FoundSF. Union leadership was consulted beforehand – in fact, one of the ILWU’s black union officials, Bill Chester, quietly ensured the union would support the protest – and civil rights groups like the NAACP and CORE joined the demonstration on the docks, as noted by FoundSF.

The result: for a full day, no cargo moved from that ship. The delay itself sent a message to the shipping line and to South Africa’s government. Although the ship was eventually unloaded after 24 hours (once it was clear the boycott had made its point), this brief suppliers’ boycott garnered significant attention. It is considered the first time an American labor union directly boycotted South African goods in solidarity with South Africans fighting apartheid, according to FoundSF.

The measurable impact was initially symbolic – one day’s delay in one port – but it set a precedent. It demonstrated that rank-and-file workers, in alliance with community activists, could take foreign policy stands (years before the U.S. government imposed any trade embargo on South Africa). Moreover, it “heightened awareness” of apartheid in the Bay Area and inspired further actions in the coming years, as reported by FoundSF.

1984 – Eleven Days of Action

Two decades later, in November 1984, the ILWU Local 10 undertook an even more impactful boycott. By this time, apartheid had become a global issue, and many countries faced public pressure to sanction the South African regime. In San Francisco, the longshore union local decided at a meeting to refuse to unload South African cargo from the next arriving ship for as long as they could, according to FoundSF.

When the Dutch vessel Nedlloyd Kimberley arrived carrying South African goods (along with other cargo), the ILWU workers unloaded the other countries’ cargo but stopped when only the South African freight remained, as documented by FoundSF. The longshoremen announced they would not move the remaining items – which reportedly included South African auto glass and barbed wire – effectively stranding those goods on the ship, according to FoundSF.

This began an 11-day standoff at Pier 80 in San Francisco. During the ensuing days, the dock became a focal point of protest. Hundreds of anti-apartheid activists and community members rallied at the pier in solidarity, singing and chanting to support the longshoremen’s stance, as reported by FoundSF. The boycott attracted widespread attention in the local media (and eventually national news) as an almost unprecedented labor action against a foreign policy issue.

The ILWU’s international leadership was cautious (they officially described the dockworkers’ action as an individual moral choice, to avoid legal liability), according to FoundSF, but they did not intervene to stop it. For those 11 days, no South African cargo was unloaded on the U.S. West Coast, sending a strong signal of protest to the apartheid government and its trading partners.

The direct measurable effect was that the South African goods sat idle and presumably incurred storage and scheduling costs for the shipping company. Indirectly, the boycott galvanized the anti-apartheid movement in the Bay Area – it “inspired growing numbers of Bay Area residents to join the fight” against apartheid, as noted by FoundSF. It also added momentum to the push for official sanctions: within two years, the United States Congress passed strict economic sanctions on South Africa (the Comprehensive Anti-Apartheid Act of 1986). Union activists at the time believed that their dramatic protest helped build public awareness and moral urgency for such policies.

Eventually, a federal court injunction was issued against the ILWU, threatening heavy fines and jail for union leaders if they continued blocking the cargo, according to FoundSF. At that point, having held out for eleven days and made international news, the longshore workers ended their boycott and unloaded the ship. The delayed cargo was finally delivered – but the point had been made. As one ILWU member put it, they had forced people to pay attention to apartheid, at some personal risk, proving that ordinary workers could influence global events.

This sustained suppliers’ boycott became a celebrated chapter in the worldwide anti-apartheid struggle. Its lesson in impact: even though the boycott itself was temporary, it helped “signal to others” the depth of opposition in the U.S. to apartheid and kept the issue in the spotlight, as documented by FoundSF.

These two instances (1962 and 1984) show the power of coordination between unions and community activists. In both cases, dockworkers leveraged their strategic position in the supply chain (international shipping) to take a moral stand. The economic effect on the targets (South African exporters and the regime) was mainly through publicity and minor disruptions, but the political effect was significant – drawing attention and isolating the apartheid government.

The ILWU’s actions also influenced other ports: in subsequent years, workers in New York, New Orleans, and overseas in countries like the Netherlands and Australia similarly refused to handle South African goods at times, bolstering the international boycott of apartheid. The ILWU’s example underscores how a suppliers’ boycott can become “contagious” once people see its moral clarity and effectiveness.

Swedish Dockworkers vs. Chile’s Military Regime (Sweden, 1974–1977)

In the mid-1970s, the Swedish Dockworkers’ Union (SDU) carried out a series of suppliers’ and handlers’ boycotts as acts of international solidarity against the dictatorship of General Augusto Pinochet in Chile. Pinochet had come to power in 1973 after a coup, and his regime was marked by brutal human rights abuses. In response, labor unions and activists worldwide sought ways to pressure the junta. Swedish dockworkers took bold action by leveraging their control over cargo to and from Chile.

1974 Copper Boycott

Chile’s economy heavily relied on copper exports. In late 1974, rank-and-file Swedish dockworkers decided not to unload any Chilean copper arriving in Swedish ports. This boycott lasted for one month, according to Left Voice. Every shipment of Chilean copper that came in during that period was left sitting on the docks or on ships, rather than being delivered to buyers. This was a direct economic hit at Chile’s main export, effectively a grassroots-imposed sanction. The action was noteworthy because it was unilateral – the workers themselves took the initiative, ahead of any Swedish government sanctions. For an entire month, Sweden’s port workers signaled that Pinochet’s products were not welcome.

1976–1977 Complete Trade Blockades

The dockworkers escalated their efforts in the following years. On March 1, 1976, the Swedish Dockworkers’ Union launched a three-month blockade of all Chilean imports to Sweden, as reported by Left Voice. This meant no goods originating from Chile – not just copper, but any products – would be handled at Swedish docks for the next 90 days.

One year later, in 1977, they repeated a similar three-month blockade, and even expanded it: the 1977 action stopped both Chilean imports and Swedish exports to Chile, according to Left Voice. In effect, the dockworkers unilaterally severed trade between Sweden and Chile for those periods. These actions were taken in coordination with calls from international unions and solidarity groups, but the SDU was at the forefront, often outpacing more cautious unions in other countries.

The impact of these Swedish boycotts was substantial in several ways. Economically, they created delays and financial losses for Chilean exports – for example, European companies that bought Chilean copper had to either find alternate suppliers or wait, which in turn put pressure on Chile’s regime by reducing export revenue (even if temporarily).

Politically, the boycotts were a major statement of solidarity with the Chilean resistance. They generated headlines in Europe and Latin America, letting the world know that workers in a small Nordic country were willing to inconvenience their own industry to stand against tyranny. The Pinochet regime, which was seeking international legitimacy, was instead publicly shamed.

These boycotts also inspired organized labor in other nations; the Swedish Dockworkers’ Union became “an example for other workers” around the world on how to use noncooperation as a tool of protest, as noted by Left Voice. Within Sweden, this was a bold demonstration of the labor movement’s power in foreign affairs. It built public awareness about Chile’s situation and kept political pressure on the Swedish government to distance itself from the Pinochet regime.

While one cannot directly measure a policy change in Chile from these actions (Pinochet remained in power until 1990), these boycotts contributed to Chile’s international isolation. Chile’s junta found it harder to do business as usual, and their supporters in Sweden (and by extension Europe) were marginalized. Additionally, the dockworkers’ moral stance strengthened the global anti-Pinochet campaign, which included boycotts, protests, and UN resolutions.

The SDU’s persistent solidarity actions in 1974–77 laid the groundwork for future actions (they later boycotted South African goods in the 1980s as well) and cemented a legacy of internationalism in the Swedish labor movement, according to Left Voice. The key takeaway is that even without immediate regime change, such boycotts can erode a dictatorship’s support by cutting off trade and showing that the world’s workers oppose its policies.

Other Notable Instances

There have been many other suppliers’ and handlers’ boycotts in history. During the 1930s, longshoremen on the U.S. West Coast refused to load scrap metal bound for Imperial Japan as a protest against Japan’s invasion of China, as documented by FoundSF.

In the late 1940s, Australian and New Zealand dockworkers famously refused to ship arms or supplies to the Dutch forces fighting against Indonesian independence, an action known as the “Black Armada,” which helped Indonesia gain freedom.

In the 1970s, as seen, some unions boycotted goods from dictatorships (Chile, South Africa). More recently, in 2021, truck drivers and port workers in some countries refused to handle goods from Myanmar following a military coup, as a form of international solidarity (showing the continuing relevance of the tactic).

Each example varies in scale and success, but all demonstrate the central idea: when people in the middle of a supply chain collectively withhold their services for a cause, it can disrupt the status quo and draw attention to injustice.

Key Lessons and Takeaways

From these examples and others, protest movements have learned important lessons about using suppliers’ and handlers’ boycotts effectively:

Middlemen Have Leverage

People who work in transportation, shipping, and supply networks hold significant power in their hands, even if they aren’t top executives. By recognizing this leverage – that nothing moves without them – workers and distributors can exact concessions that consumers or producers alone might not. The Jolly George incident showed that a handful of dockworkers could influence national foreign policy by simply not loading a ship, according to Libcom.org. Modern movements should remember that those in the logistics chain (drivers, pilots, dockers, couriers, etc.) can be crucial allies in nonviolent resistance.

Solidarity and Organization are Critical

A suppliers’ boycott quickly falls apart if even a small segment defects under pressure. The success stories all involve strong solidarity (often through a union or association) and clear organization. Where there were divisions – for instance, in 1985 a rival union in Sweden undermined a dockworkers’ boycott of South African goods, as reported by Left Voice – the boycott’s effectiveness suffered.

The lesson is to organize thoroughly beforehand and address participants’ concerns so that everyone remains committed. It helps to have democratic decision-making (as ILWU Local 10 did in voting for the 1984 action, according to FoundSF) so that participants feel ownership of the protest. Solidarity can also mean preparing strike funds or getting community donations so that boycotting workers aren’t financially ruined by their stance.

Preparation and Communication Make the Difference

Spontaneous boycotts can occur, but the most impactful ones are usually prepared in advance. Organizers spent time educating and persuading the workers or suppliers about the cause (whether it was anti-war in 1920 or anti-apartheid in 1984). This meant that when the moment came, participants were ready to act with conviction.

Additionally, informing the public and media about the reasons bolsters legitimacy. A well-publicized boycott can turn a local logistics stoppage into international news, amplifying pressure on the target. For example, the 11-day apartheid cargo boycott was largely ignored by mainstream media at first, but persistent communication and the sheer spectacle of the standoff eventually forced it into the news cycle, as noted by FoundSF, multiplying its impact. Transparency about why the boycott is happening tends to win more supporters and isolate the opponent.

Nonviolent Discipline and Moral High Ground

All these boycotts were strictly nonviolent – workers simply refused to do certain work. This nonviolence is not just an ethical stance but a strategic one. It often gave the boycotters the moral high ground. They could say: “We are peacefully withholding our labor rather than aiding injustice.” This stance made it easier to gain public sympathy and made any violent crackdowns by the opponent look bad.

Maintaining nonviolent discipline (no sabotage, no riots on the docks, etc.) is crucial. It turns the narrative into one of conscience versus coercion. In case after case, from London to San Francisco to Stockholm, the boycotters earned respect for their principled stand – a soft power that violent tactics might have undermined.

Expect Counteraction – and Plan For It

It’s rare for a powerful target to passively accept a boycott. They will try legal, economic, or propaganda countermeasures. Successful campaigns anticipated this. Some boycotts were short and sharp by design (to make a point before courts intervened). Others built alliances to withstand longer struggles. The lesson is to be flexible and ready to adapt.

If courts issue injunctions, perhaps the protest shifts to symbolic gestures or intermittent disruptions. If the opponent hires replacements, the movement might picket those replacement workers or appeal to their conscience. When Swedish dockers faced opposition from a rival union, they continued their stance in other ways and worked on building international networks beyond the traditional federation, according to Left Voice.

Modern activists should have a playbook for various scenarios, so a countermeasure doesn’t completely derail the effort. Sometimes the very act of resisting an injunction (even if ultimately one must comply) can draw further attention – as happened in the ILWU 1984 case, where the legal battle extended the media coverage of their protest, as documented by FoundSF.

Small Actions Can Ripple Outward

A localized suppliers’ boycott might seem limited (one ship, one port, one company’s supply line), but it often has a demonstration effect. When others see that a group successfully took a stand, it can inspire similar boycotts elsewhere or add weight to broader campaigns. The term “Boycott” itself comes from an Irish land agent (Charles Boycott) who was ostracized by suppliers and workers in 1880 – that small local action gave a name to the tactic that spread globally.

Each example we covered had effects beyond its immediate scope: the Jolly George inspired labor militancy in Britain and beyond, the ILWU’s actions spurred activists across the U.S., and the Swedish dockers influenced labor movements internationally, as noted by Left Voice. The takeaway: don’t underestimate the power of setting an example. Even if a boycott doesn’t single-handedly force a policy change, it might be the spark that others follow, creating a cumulative impact.

Principle and Pragmatism Go Hand in Hand

Finally, a key lesson is that a suppliers’ and handlers’ boycott works best when participants balance moral principle with practical execution. The moral principle – “we will not be complicit in X” – provides the motivation and public justification. The practical execution – organizing who will stop work when and how – makes sure that principle actually bites in the real world.

The most enduring image of these boycotts is ordinary people, such as dock workers, saying “Not on our watch” and physically halting the machinery of commerce in a quiet, firm way. It’s a potent form of protest because it hits the opponent’s capability (their supply) and asserts the protesters’ dignity.

Movements today can adapt this method to new contexts (for example, imagine tech workers refusing to maintain servers for an unjust government program, or delivery drivers refusing to service businesses engaged in abuses) – the sectors change, but the core dynamics remain. The guide of history suggests that when done thoughtfully, a suppliers’ and handlers’ boycott can be a game-changer, adding economic weight to the moral claims of a nonviolent movement.