The genetic racial predisposition thing has been used by nazis and other eugenicists forever. I’m descended from germanic barbarians and have yet to rape and pillage my way across a single continent.
The morons who say look at Africa are ignoring the africa of the past where there were plenty of peaceful tribes and no more violence than anywhere else. Africans have been killing each other for thousands of years, europeans have been killing each other for thousands of years, asians have been killing each other for thousands of years and native Americans were killing each other for thousands of years.
Well, come on, now ... get with the program!
How big of an area have you raped and pillaged your way across?
Start small ... say, your bedroom ... and then work your way up to your neighborhood and then your city. Pretty soon, you'll be raping and pillaging whole counties and states and, before you know it, you've worked your way up to continents.