I know why the scene was made up and added to the story. The director told us, point blank: "white people need to see themselves doing the right thing."
And I think it's the same reason that clip was tacked on to my post.
So that's what I was inviting other POVs on: the need to follow up Taraji's monologue with a clip of Kevin Costner pretending to be her hero (not in the movie, but in this thread).