Egyptian pharaoh was executed on the battlefield, mummy reveals

Questions: How will/would our genetic proclivities for oppression, dominance and violence come into bearing in an extraterrestrial settlement? Do we assume an unrealistic hubris when planning such settlements? My opinion: "The Better Angles of Our Nature" seems to appear only after an enemy is either defeated or dead. Basically, we're A. Africanus updated by Evolution for weapons , curiosity and Space Suits?