I don't remember Kim's friend from the first season but will take your word on it. She probably does have friends who are white but Bravo just doesn't how them or she doesn't hang out with them very much.
Kim has a LOT of faults but racism certainly isn't one of them. It's too bad that she and Nene are enemies now. I remember how they were BFF in the early shows. Although I can't understand why Nene would have any friends at this point in her life. She's very obnoxious in her new self-centered mode.
Just the scenes of her when she walks into various parties, her huge ego is very evident.
I sometimes wonder if her and her husband's state of marriage isn't just a ploy for drama effect...She certainly hasn't "fooled around" with anyone else...or at least, that's what we are led to believe.