Act of Aggression (1975)

An ordinary man is driven to violence in the name of revenge in this drama. Paul Varlin (Jean-Louis Trintignant) is a businessman who decides to take his wife and daughter on a vacation. While stopping for gas, Varlin's wife is accosted by a gang of motorcycle thugs, who progress from ogling her legs to raping both the wife and young girl, and then killing them both. When Varlin discover's this horrible crime, he takes it upon himself to track down and kill the bikers in the name of justice