This isn't a really counter-argument. It could be (and IMHO likely is) multi-causal, with several contributing factors, including lack of social welfare (leadi

This isn't a really counter-argument. It could be (and IMHO likely is) multi-causal, with several contributing factors, including lack of social welfare (leading to people with rough childhoods), gun availability and also lead exposure in childhood. The question at hand is how to weight the last factor. IMHO it's not zero, but I don't know enough to say just how much.