The reason he’s being called a racist is context – this is hardly a one off incident, rather a continuation of 40 years of racist activities. I suppose you can make an argument that he has an absolute contempt for poor people, compounded by being a germophobe, but generally people go with racist. It’s not just democrats, a lot of republicans think he is too.
an observation , where do you get your us politics from – US media, or via uk, Australian sources? The latter is quite filtered – the US sites are the places to go.