That it's possible in an oppressive and hateful environment that someone managed to get a job title?
When I was a child, I had multiple field trips to a plantation in Louisiana. We didn't live very far away, so it was a convenient spot to go when our history teachers wanted to take us somewhere. And on the three separate trips I took, from the time I was a first grader to the time I was a junior in high school, not once did we ever visit the slave cabins, nor did the tour guides or teachers ever discuss the living conditions of the slaves or the fact that there were dozens of dead black heads on pikes outside of the entrance after the outcome of a slave rebellion. No, the tour guides talked about the artwork and the owners and the types of crops that grew.
It turns out we've been covering up the sins of our ancestors for generations, and it's part of the reason people like you are so stone-cold ignorant on the issue. Because if you're going to teach history, you should fucking TEACH HISTORY, not the whitewashed version that excludes all the naughty bits that make your ancestors look bad.
I'd hazard a guess that black lady lawyers and CRT theoreticians such as, say, Kimberlé Crenshaw know something about the actual challenges of black people in the USofA and likely teach that and a bit about the history of black law in the USofA.
What with CRT being a university level course and all.