Heydrich is terrifying because he wasn’t a committed Nazi at all. He was just the right sort of opportunistic suck up middle class twat who decides to be at the top of his game at the wrong time. I think there are probably hundreds of them in large companies, in politics, on charity trustee boards and in clubs and societies all over the world - Heydrich (and Eichmann) should be more widely known, as the blueprint for dopamine achievement evil. Not ideological at their core but whose motivation lacked morality. See also Boris Johnson.