I totally agree with Scotty! You NEED to do something! Again either way you risk getting hurt again. Why not do something and help yourself! There are ways of remaining anonymous (and I find it hard to believe they have access to police reports). They are right: "if your not part of the solution then your part of the problem". My guess is with that many of them they are all ready under the watchful eye of the cops. Maybe the cops are just waiting for someone like you to come forward with information like this! If you never try you will never know! Also I find it just ignorant to assume they will do nothing. If one doesn't do anything keep moving up the chain until you find someone who will!
I'm not trying to be rude or mean, nor do I live or know anything about your neighborhood! They way I see it you put yourself in more danger by NOT doing anything. If they are as bad as you say they are then what's to keep them from breaking into your house, or robbing you next? Just becasue they KNOW they can get away with it!.
OK, I'm off my soap box now! Just remember that all of us here have YOUR best intrest in mind!