(Cartmill 1997: 511). To Dart, the australopithecines were
confirmed killers: carnivorous creatures that seized living quarries by violence, battered them to death, tore apart their broken bodies, dismembered them limb from limb, slaking their ravenous thirst with the hot blood of victims and greedily devouring living writhing flesh. (1953: 209)

That hunting hypothesis “was linked from the beginning with a bleak, pessimistic view of human beings and their ancestors as instinctively bloodthirsty and savage”

"If we are cursed with a demonic male temperament and a Machiavellian capacity to express it, we are also blessed with an intelligence that can, through the acquisition of wisdom, draw us away from the five million year stain of our ape past."

http://www.nonkilling.org/pdf/wp1.pdf