And pretending like parents caused most of your perceived jssues rather than taking personal responsibility over your actions rather than needing to project a scapegoat onto other evil people rather than just understanding that some of those people are just bad people.
tl;dr: Separated identical twin studies have shown over and over that so much of who you are, the small quirks, the larger life goals, all of it is something that you will be naturally inclined to. Being raised healthily only serves to dampen or enhance much of what's already there.
Mass murder, a careless disregard for human life and liberty, inflicting pain both emotional and physical onto others. Most of these are essentially switches some people simply aren't born with. People can learn or mask all they want, it doesn't mean you're not playing with a shit hand.
All people are not created equal. Many people have a significant harder time going through life because they rolled snake eyes on the genetic lottery. Our robust mountain of scientific evidence and understanding of the human brain points to nearly all of it being rooted in Scumbag Brain / Body.