More than 200 Palestine solidarity campaigners joined a community picket against Electromold in Thomastown on July 4.
Electromold is a chemical processing facility which works with Lockheed Martin and Boeing to produce components, including for the F-35 Fighter jets being used to bomb Palestinians in Gaza.
Victorian police used force and pepper spray to break the community picket up.
It was the first picket of Electromold and more are being planned.