Reply #6: My wife experienced a demonstration of this

[localroger]

While she was in class in college one day two men burst in, had a brief altercation, then one chased the other out. The teacher asked the students to write down what they just saw; every single student wrote that a black man had chased a white man with a knife. With these results in hand the actors were invited to re-enact the scene in which the white man chased the black man with a banana.