Were more prone to violence.
No, most animals are more prone to violence than humans.
For example, wolves are like relentess and unstoppable gangs of canniballistic murderers! 😀
Predatory animal species kill in order to survive. Man kills for a lot of reasons, very few of which have to do with eating. Name one species that has killed millions of it's own kind. I can think of only one.
This is supposed to be a discussion about biology, not politics. If there were 6 billions cats on this planet, they would fight and kill each other, too!