So what does she do since she's losing the debate? The usual. She starts yelling at him about white privilege. That his views aren't legitimate because he's a white male with privilege. Then David chimed in and said, "You really should have done your homework, I'm black." The radio went silent for a moment. Then I couldn't make anything out for a few seconds because she was mumbling. Then she blamed the confusion, on air, on her staff. That's so unprofessional.
My gosh David has been around for decades; it amazes me that she didn't know who she was talking to. Can there be a better burn? She was humiliated.