Clarence Thomas attests to that in his book. When he tried to get a job in the real world, he found that a black man's law degree meant nothing because it was assumed that he didn't earn it, but was granted it on the basis of race.
It is very corrosive. When you get a doctor in a hospital who is black - would not you question why he is here: because he deserved to be here or as an affirmative action product? Then you supposed to be ashamed for thinking like that. Doesn’t matter how you slice it, it’s bad for the society. It’s not what Dr. King was dreaming about