I understand. I would assume you (we, all of us) could sue anyone who murders a family member. In this instance as I stated before is these people don't have any money. Pretty hard to sue someone who has nothing.
I know we get into a lot of ideologically driven hypothetical debates on this board but this is actually happening in real life. These people are not getting police service because there are not enough cops. I think people who are tired of having their neighborhood terrorized by thugs banning together saying we are not going to take it anymore and we are going to watch out for each other is great. That's a real meaning of community as I understand it.