Racism will NEVER end. It's existed since our ancestors came down from the trees and started walking up right. It is only natural to associate with those that look most like you, because we all trust family more than strangers. When the first homo sapiens encountered others, they perceived those that looked different then their families/tribes to be enemies, because this was most likely true. It was a product of our evolution, to be aware of our race.
We may be intelligent, and really arrogant because of it, but we cannot escape natural selection.
As much as we bash on WJ, he's just an example of someone who wasn't taught that you can actually trust and coexist with those that look different. This makes him ignorant, but if you aren't too smart to begin with, it's very hard to change the way you look at the world. Some people just don't take well to having their POV turned upside down.