Savage Streets (1984)

After nearly being run down in the street by a gang known as the Scars, Brenda (Linda Blair) and her deaf-mute younger sister Heather (Linnea Quigley) and their friends trash the car of the gang leader, Jake. Jake exacts his revenge by getting his cohorts to gang-rape Heather. A fight between Brenda and her friends and the Scars at a local nightclub results in Brenda's pregnant, soon-to-be-married friend Francine being murdered by the Scars, who throw her off a viaduct.

When Brenda learns who is responsible for Heather's rape, and that Francine is dead and the Scars are responsible, Brenda arms herself and sets out to avenge them. Finding them at a nearby warehouse, Brenda impales one of the gang members, Fargo, with an arrow; kills another, Red, by snapping a bear trap shut upon his neck; and then begins to torture Jake with arrows shot into his thighs and a hunting knife as he hangs by his feet from a gate. However, he then manages to free himself and attacks her. The showdown ends in a nearby paint store; as a burglar alarm blares, Brenda douses Jake in paint and then sets him on fire with a cigarette lighter that she has previously had difficulty getting to produce a flame, just before the police arrive.

The movie ends with Brenda (who is presumably facing prosecution for the murders of Fargo, Red and Jake), Heather and their surviving friends visiting Francine's grave, and Brenda comments, "At least we set things right," to which her friend Stevie replies, "No, Brenda. You set things right."