Why can't police do thier job?

You say you are over it but your question and statements prove you are not. Look, there never has been a guarantee that life is fair, it's not. You've had an unfortunate experience that you wouldn't have had in another locale. It's time to put it behind you and move on with your life and try to do that with your own heart free of the things you dislike in others. You don't find happiness by focusing on evil.