Prejudice shows up in many different ways and within every race.
My husband was a District Manager for a large Audio Video chain in the 80's. At a store in white suburban U.S.A. one day, he was taking care of a customer with his back to the door.
In walks a large 6'3 250 pound biker. Long hair, chains, leather, you know the get up. The store manager panics. Runs up to my husband and tells him he his calling the police, because there is a customer in the store that "looks" like he is going to be trouble.
My husband turns around, takes one look and tells the store manager, "Thats my brother inlaw."
Easily this could have turned into a horrible situation based on assumptions. I think this is what happened with the Gates scenerio. Things can escalate out of control very quickly.
r.