Isn’t that quite prejudice? If somebody is a racist asshole, he must be white?! An African who is prejudice against African Americans isn’t new. This has been going on for a while.
White people are perfectly capable of being racist towards each other. There is no reason blacks should not as well. Just like not all Asian get along either.
Anyway the guy is obviously attention seeking. There are always some who cherish the limelight, and will do anything to get into it.