People like you are no better than animal abusers, anyway violence only calls for more violence and beating a person won't make he understand his mistakes. People like this have their minds fucked up, it doesn't make sense to beat them. You have to make a person comprehend what he did, the punishment of him remembering what he was will be much harder for him than withstand some bruises. And if it doesn't work, you put him in conditions to not hurt anybody, trying to make him work anyway so he doesn't just waste resources.