Or, it's there to be "hip", appeal to young, idealistic viewers who think it's awesome to tear down monuments built during an era of slavery in order to sell more tickets. Hollywood is the modern Whore of Babylon. They'll do anything to make a buck, but sometimes like to jerk themselves off doing it.And this....
Why did the screenwriters feel compelled to have a young biracial woman say to her white debate coach that she won't go into buildings built by slaves? How did that add to the movie's narrative, help to move the story along?
The answer is, it didn't.
It's in there just to be divisive. It serves no purpose whatsoever except to denigrate one of the world's great engineering feats (especially in the mid 1800s) and disrespect America's first president.