To the OP's question, what can be done to stop this. I believe that these people have no self respect and as such have no respect for anyone else either. I feel this is just another example of the break down of the family, little or no father influence. I don't have a clue as to how we, as a country, renew the family structure. But I think it also falls in line with the divisivness of society in general i.e. for the most part we are no longer defined as just "Americans" but by race, ethnicity, religion, etc, which just serves to seperate us as a nation, and I feel this is being done by design although I can't put a finger on by who exactly. But the further we go down this road the worse it will get. Gun control is not the answer but I thnk it will get a hard push from this lastest tragedy.