New York City Mayor Zohran Mamdani threw his support behind an international dockworkers’ strike against arms shipments to Israel on Monday, even though not a single New York port took part in the walkout that hit 113 ports across 22 countries three days earlier. The mayor framed the Oct. 30 action as a stand against weapons transport and a show of solidarity with Palestinians, while organizers behind the strike pressed for both an end to military cargo and broader labor protections for the workers who move it.
Mamdani expressed support Monday for the strike, according to the Baltimore Jewish Times, declaring that New Yorkers stand with the dockworkers and that workers uniting in their power can build a better world. He also said dockworkers do not work for war, language that places him squarely behind a campaign more than 25 labor unions backed in coordinated strikes and demonstrations. Still, the outlet reported plainly that no New York ports participated in the action itself.
A Coordinated Walkout Across Five Continents
The strike swept through major shipping hubs including Genoa, Italy; Piraeus, Greece; Valencia, Spain; and Tangier Med, Morocco, with dockworkers protesting the use of commercial ports to move weapons and military equipment toward conflict zones, including Israel. Organizers said related actions also unfolded in India, Australia, Brazil, Mexico, Uruguay and the United States, though participation and cargo disruption varied widely by location, per gCaptain.
The most visible disruption came in Greece. About 3,000 dockworkers and seafarers walked out at Piraeus, and Reuters reported that the action disrupted cargo operations and ferry services to the Greek islands, according to the Baltimore Jewish Times account. Beyond opposition to arms shipments, workers also called for higher wages, improved working conditions, greater protections for seafarers operating in war zones, and the right to have doctors aboard vessels crossing conflict zones.
Group Behind the Campaign Cites Unverified Cargo Estimate
The strike drew organizing support from No Harbour for Genocide, a campaign that seeks to keep military equipment, fuel and other supplies from reaching Israel and that maintains a blocklist of vessels it identifies as carrying military supplies or energy there. The group says it has urged dockworkers, port authorities and governments to deny those blocklisted vessels port access and related services.
According to the group, it documented 315 shipments of components for Elbit Systems, an Israeli defense manufacturer, moving through 56 commercial ports in 29 countries between August 2025 and September 2026. No Harbour for Genocide also estimated that the strikes would delay roughly 52,000 shipping containers carrying $2.8 billion in cargo — a figure Reuters said it could not independently verify, the outlet's report noted.
Experts quoted elsewhere were skeptical the action would ripple far through global trade. A 24-hour strike was unlikely to significantly disrupt global commerce overall, though it could affect perishable goods and time-sensitive shipments, according to KSL.com. The International Transport Workers’ Federation framed the protests as also drawing attention to demands for better wages, improved conditions and protections against increasing automation, gCaptain reported.
Part of a Longer Pattern of Port Protests
Friday's walkout was not the first of its kind. It followed an earlier international day of action on Feb. 6, 2026, that involved 20 ports in seven countries, and built on the May 2026 Istanbul Declaration, in which unions representing more than 35 ports agreed to oppose moving weapons, ammunition, military equipment and troops through civilian port facilities, per gCaptain's reporting.
The movement has carried legal risk for some organizers. A 2024 protest in which dockworkers blocked the loading of a container holding 21 tonnes of ammunition bound for Israel led to prosecution for Greek dockworker union leader Markos Bekris, according to Al Jazeera.
Mamdani's Broader Record on Israel
Monday's statement extends a pattern for the mayor, who has repeatedly accused Israel of committing genocide in Gaza and has criticized U.S. military assistance to the country. In a statement marking the third anniversary of the Oct. 7 attacks, he accused Israel of committing war crimes and criticized what he called the federal government's complicity in arms shipments.
Mamdani also supports the movement to boycott Israel. On his first day in office in January 2026, he rescinded an executive order issued by predecessor Eric Adams that had barred certain city officials from procurement and investment decisions discriminating against Israel or Israeli citizens. He appeared at Evangelical Crusade Christian Church in Brooklyn last Sunday, a stop that came just a day before he voiced his support for the dockworkers' strike.
