In a world gone mad...

This world is just too much to take. I can't believe the atrocities that some people commit. I hear about brutality on the news, see it fictionalized on TV and in the movies, read about it in books, magazines, and newspapers. But these things are really happening. Someone is actually cutting the head off of another human being.
Alive one minute, a headless corpse the next. Even thinking about it makes me physically ill.
Who are these people? What goes on in their brains?
Am I different?