Rape Ceremony (1980)

In a rural town, ex-members of a motorcycle gang become sporadic victims of vigilante attacks. A group of high school boys are responsible for the various assaults because they're upset that the motorcycle gang had disbanded. The boys idolized the rebel gang and harbored dreams of joining them after graduation. A female student happens to see one of the assaults and is threatened by the high school thugs. But she turns out to tougher than she looks.