They talk about challenge and how when they beat on helpless opponents "that's the way it is"
You know, that whole "Darwinian mode" thing is a fallacious argument; what Darwin wrote in 'Evolution Of The Species' has been misinterpreted for a long time by armchair (and some real) scientists. If you are current with the literature in the field, you'd see many more people coming around to this view of Darwin's writings.
It's like that whole "lone wolf" thing that has been impressed upon us as a cultural myth. Wolves are pack animals. If a wolf is "lone," he's either old and dying, rabid or unable to take the pack Alpha male. Solitary wolves die pretty fast. Our entire overview of the wolf has changed immensely in the last 30-40 years.
A lone wolf is a dead wolf walking.