Because only whites can be racist.
Sadly, it's reached that point. It's as clear as can be that black racism exists. Al Sharpton and Jesse Jackson are good examples of professional race-mongers. So does Hispanic racism (La Raza means just that - "the race"). As if that weren't bad enough it's become part of our law. What else is affirmative action but racial discrimination?
Whites only, but Koreans once in a while...