I am not an American, so I do not have a dog in this fight.

But the bridge between alcohol and insecurity on one side and murder on the other that you seem to erect seems rather uncertain to me. Scandinavians drink like fish, suffer from a lot of seasonal depression, but their rates of murder aren't that high. Nor are rates of murder in rural USA regions originally settled by Scandinavians.

Murder seems to be strongly correlated with gang activity in the U.S.