For just about all my adult life, I've seen "racist" attached to some white person. Never has some-one accused a black person of being racist, though they're the ones, who utilize that insult, much the same as the non-Christians demand, "Judge not.." - in order to get their way or to continue doing whatever is offensive to anyone else.
Let's see: Obama is half-American, half-African. He is not, in the sense of having ancestors, who were slaves, African-American, though. He did, however, lie to all the world about being a black man, when, in reality, he was slapping the faces of his WHITE grandparents, with whom he lived after his mom's death.