My problem with current fights in canada, where school shooters exist but are rare, is they seem largely gang related (read business related) which doesnt have a chance of providing the right lesson because the lesson from a business fight is the same lesson from bullying fights: come back with a bigger weapon to right this injustice. The lesson we are looking for requires the kid know the social norms roughly and be in a testing situation that crosses the line, is corrected with a mild amount of violence from the other kid but leaves the situation such that they could repair the friendship in the future with the right words and realizations. This happened at least five times in my youth and atleast two escalated to a bit of violence and it was informative. I dont see it happening at all in my kids or my neices and nephews youths and that c(ncerns me a bit.