What would you do?

The past six(or 7) months, a lot of problems have arised in the family. Now the problems have gotten so bad that its led to fights, police, restraining orders, and broken windows. Yes.. you might say, fights? Broken windows? Yes. The problem is a family member, who is a meth- addict, (as well as other drug abuse). Its gotten to the point of where he has had his so called "thug" friends to try and harass and has also threatened to shoot up my house.. Ive gotten my window broken(dart rear) carb stolen off the car( my fault, no hood) and other stuff including a bunch of my dads and grandmothers stuff... In this type of situation what would you all do? Let it be? fight back? Lawyer? Keep calling the worthless police? And by worthless, i mean they cannot do anything about the threats of killing us..( the officer was in front of him while he threatened to come back and " light us m********as up" and left.. Sorry for the huge rant, just wondering what others would have done differently. Thanks fabo.