Irrespective of his politics, he could equally be screeching left wing rubbish, instead of right. He's a sociopath and an example of what happens, however clever/stupid/poor/rich you are, if you go your whole life being told that you are better than everyone else, correct (in the face of overwhelming evidence) and never corrected for inappropriate behaviour. It could be his diminished empathy is a genetic condition or a social one - either way, the effect is much the same. Sadly this could be any one of us, if we were treated that way for 70 years.