It's a complex issue. Anecdotally some Obama voters broke for Trump, so it's hard to see them being 'racist'. But people like to discount the hurt in the working class and are happy to label them racist --just because this time they didn't agree with you.
My thoughts on some of it is that while the white working class (as well as the black working class) are happy to see America help others out, internationally, domestically; they are not happy to see America help others out but at the same time ignore them and belittle them. That can be in trade deals, acquiescing to illegal immigrants, talking down to them, etc. There are likely a sprinkling of racists on the Trump side, but I dare say, there is the same likelihood of reverse racists on the Clinton side ['white people are the devil'].
My thoughts on some of it is that while the white working class (as well as the black working class) are happy to see America help others out, internationally, domestically; they are not happy to see America help others out but at the same time ignore them and belittle them. That can be in trade deals, acquiescing to illegal immigrants, talking down to them, etc. There are likely a sprinkling of racists on the Trump side, but I dare say, there is the same likelihood of reverse racists on the Clinton side ['white people are the devil'].