The most interesting part of this experiment was the noticeable difference in performance (with the flashcards). You can see how bias would become a self-fulfilling prophecy. Children of color are looked at to be less innocent, or less intelligent, and naturally they get expelled at greater rates or have lower test scores, which continues to fuel the bias. I have seen this video before and I think of it all the time when you hear people get worried about white people becoming a minority in the future. It makes you want to ask them why, do they think minorities are mistreated?