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.

Like i said before, natural selectiom doesnt usually pick the nice guys.
So no possessing a fire arm and picking toddlers doesnt mean hes got lucky and that it doesnt count as natural selection. It does.
Thats called being an opportunistic person and using your surroundings to your advantage. This type of person would definitely survive more than someone without these traits. (again) if we humans werent smart enough to work together and give all of us rights to live.