The 'anti-racist' activists are really pissed off and want him punished.
Because 'critical race theory' means teaching children that the most important thing about themselves isn't what they do, what they make of themselves, it's the melanin content of their skin. Oh, and white people cause all ills in the world. And if you don't let them do that, if you don't require it, you're a racist.
Because being 'anti-racist' means teaching kids to be the right kind of racist.