In the beginning of the movie American History X, we can see Edward Norton, in the role of neo-Nazi Derek Vinyard, kicking a man in the back of the head whilst his teeth rest on a sidewalk. Derek's boot crushes right through the skull, leaving his victim dead.

Despite critics saying Norton's own editing of the film took off the raw edges somewhat, this is undoubtedly one of the most horrific scenes ever to make it to a theater. Even more horrific is the fact that the cruelty committed by Derek here is no figment of the imaginations of director Tony Kaye or script writer David McKenna. In fact, this act has a name. It is known as a Californian curb kick.

Fatality is usually the result of breaking the spinal cord, or jaw bone fragments penetrating the skull. Victims who survive face massive reconstructive surgery and dental bills.