I would consider myself slothful if I didn't include this one.
All of us are descended from the successful murderous cannibals of the past.
This fact ought to be humbling - I am troubled that few seem to either acknowledge or care about this fact.
What amazes me is not that the Americas had cannibals but that archeologists were so arrogant as to dismiss the first indications of the practice.
It boggles the mind. What else do they have the Ostrich Syndrome about?
"Inca chronicles and legends persist that the Cloud People were tall fair (skin and hair) warriors. This is reinforced by an unusually large proportion of blond, fair natives in this zone who know of no European ancestry."
2004: Top (Archaeological) Finds On Bolivian Highlands