Ms. Wente's description of the mixed raced student filling out the "privilege" evaluation highlights the absurdity of this mindset.
The very definition of bigotry is judging an individual person based on their skin color, ethnic background, religion, etc.  Martin Luther King understood this.
Bigotry is insidious and destructive and never leads to anything good.  It doesn't matter whether it spews from angry skinheads in a crummy bar or from creepy cultural Marxists in a faculty lounge.