Anyone who decides it's a good idea to corrupt a child. Abusers, molesters, rapists, neglectors, and the like. I'd like the opportunity to meet you alone in a room, and have you shackled to the floor. I would make a small incision at your hairline, and slowly peel the skin right off of your bones, all the way down to your disgusting toes!
Oh, and anyone who likes to have fun and is interested in live music.