…but this comment by a student who subsequently complained about the professor's failed pedagogy is very telling:

“My mind was racing but physically, I was frozen,” she wrote. “How do I react to this? In high school, I would have walked out of the room straight to my car. I would have called my mother on the way home, and she would have arrived at the front office in under an hour to rip the principal and his employees a new one. All is well when you are young and do not have to deal with these issues head-on. But in college my mother is over 1,800 miles away. This time around I was on my own.”

UPDATE:  Here's the full statement by the complaining student–the one whose Mom wasn't available this time.  Its contempt for tenure and for academic freedom is appalling.  Its inability to distinguish between racism and failed pedagogy is also alarming.