The Armed Organization(1971)

Violent Gang Re-Arms is a rousing tale of friction in yakuza and labor interactions with Koji Tsuruta as a yakuza supervising a dockworker's union. He finds himself between a rock and a hard place, at odds with both the dockworkers' leader (Tomisaburo Wakayama) and sadistic, unprincipled bosses (Fumio Watanabe and Tetsuro Tamba).