This student lost it after her professor failed to answer her question "How does evolution kill black people?" 

Context from video uploader: “The slide we were on just before was about Female Sexual Selection. For instance, female peacocks have selection in their mates, preferring the males with the bigger train of feathers.. Somehow she went off on some tangent with a question about how does Evolution play a role in the killing of all black people... Dr. Kajiura tried to answer her question even though he had no idea what she was talking about. She repeated her question 4-5 more times and it turned into this craziness you see here... Clearly, this person has some serious emotional issues within herself and the discussion of peacocks was the catalyst to the unleashing of this insanity. She was escorted out of class and I heard she was tasered and arrested by the police.”