https://thehill.com/opinion/white-house/456523-donald-trumps...
I don't believe he is a racist. He has strong opinions and no fear of hiding them. That is actually a huge draw for people voting for him.
Accusations of racism are mostly political play.
I don't really see how it is self-evident though. What do you think makes him racist? The Obama stuff could be seen as that but I am unsure if it is racism or craziness, but I would tend to think the latter to be more correct.