It really depends on the violence, violence using a firearm is different, but only every other kind of violence is natural selection, 2 animals fight, the strong one survives, then fights another, the stronger survives, over time, that species will grow stronger and stronger, of course a few times someone's going to get lucky, like possessing a firearm and choosing a bunch of toddlers, but, yes I still believe violence, is a way of a species evolving and becoming stronger. Aka natural selection.