I'm not trying to be a "Drumpf has psychology" guy but Trump's racism is inextricably linked with his egomania because no matter how transparently dumb and sub-competent he is, he holds on to the notion that his genes make him brilliant.
This is his real link to every kek incel on here even though they'll never have his money or prominence; it doesn't matter if you have no friends or prospects and you're angry all the time if you're a Viking!