Among the banners explaining the action to passersby was the message: “Nammo weapons end up in Israel.” Nammo — short for Nordic Ammunition — is an arms manufacturer in which the Norwegian government owns 50 percent of the shares.

While Norwegian law prohibits direct sales of weapons to countries engaged in armed conflict — including Israel — Nammo’s wholly owned US-based subsidiary, Nammo Talley, sells anti-tank rocket launchers and explosive armor-piercing bullets to the Israeli military.