Bullies (1986)

In this violent exploit actioner, the gentle Morris family moves into a peaceful mountain community to find a quieter, safer way of life. Unfortunately, they soon discover that the town in totally controlled by a clan of fiendish thugs, the Cullens, who welcome the new family by savaging the mother, tormenting the father and beating up the girl friend of their teenage son, Matt, who survives the ordeal and soon gets his violent revenge.

I always thought this one was an underrated revenge film, low budget yes but I think the characters do a good job convincing enough for me. It may not be the most brutal film but It indeed has some quality moments.