He's neither, possibly or even probably a racist - he is in fact, a racist. Those who support him are either that themselves or just plain ole stupid; I'm betting on both.
It boggles the mind to see so many dismiss his bigotry and slander as some sort of tactic to get things done or a strategy to move an agenda benefiting this country. He's an "us vs them" guy - if you don't look like him, you are "Them" and "Them" don't belong to his world view - and while we're at it, for him "Them" is you because you do not benefit him other than you might stay at one of the hotel's he has his name on.