Damn... my good friend's mother married this guy who turned out to be a crack addict. It turned out he was stealing shit from both my friend and his mom. The problem was that his mom is a big time christian, so she keeps him around thinking she will change him and turn him into a good christian.

Once this crackhead stole one of my friend's things again, and he blew up at him. He beat the shit out of his step-dad. I guess he punched him a few times and slammed his head against the oven a couple times.

Point of the story is, they're right. You gotta stand up for yourself. Stop selling them shit, and the next time he talks shit to you, beat the living shit out of him. If you don't think you can, then start training. use your anger as your motivation. Train, lift weights, get boxing gloves and box with friends. This is a battle. You have to do this before you are 18, so you don't get in as much trouble with the law. If he doesn't realize that you deserve his respect, then beat the idea into his head. Every time you box, every time you lift weights, think of him. Think of all that he has done to you. You know what you must do.

Just... don't kill him.