Back in October, 2016 I wrote an analysis entitled “Are Humans Natural-Born Killers?” It described and commented on research on the origins of human violence published in the science journal Nature. The conclusion offered in the article is that humans come from an evolutionary line that has the capability for violent behavior genetically built into it. It is a reasonable hypothesis. As just about every serious historian knows, the human propensity for lethal violence goes back as far as the evidence can take us — so far that there can be little doubt that this trait is inherited from our pre-human ancestors. Read more.