Billy lays it out exactly like it is. It is racism at the very core of the most enthusiastic support for Obama, and that includes Oprah. Yes, I understand very well that she is not a racist in the sense that she regards white people as inferior. She’s a racist because she wants to elect a president on the primary reason of his skin color. That is racism, no matter how you slice it.
Afterthought: It’s racism in precisely the same way that black people say it is when you as a white person make a big deal or take particular pride in having "lots of black friends."