Dockworkers in more than 20 countries—from France to India to Greece—are withholding their labor on Friday to demand an end to Israel’s genocidal assault on Gaza and highlight the role that commercial ports play in fueling deadly militarism worldwide.

Organizers said the work stoppages, led by dockworkers’ unions at 113 ports across 22 countries, would be the “largest coordinated port action ever,” easily surpassing the international day of action held in February. No Harbour for Genocide, a collective of trade unions and others supporting the day of action, said $2.8 billion worth of cargo will be halted at Mediterranean ports, where workers are planning to strike for 24 hours.

“A cargo refused in one port sails on to the next,” said No Harbour for Genocide. “Refused in every port, it stops, and the workers have enforced the embargo that governments announced and did not.”