Damn- sucks, bro. I have got to go with what everyone is saying though- report it to the law. Even if they don't do anything about it, you did your part. You can't take the law into your own hands, no matter how hard it may be to not do so.
I couldn't live like that though. I know home is home, but if it is between your family's safety and beef with people daily, I would move.