Whatever the ultimate outcome of the case against George Zimmerman for his shooting of Trayvon Martin, what has happened already is enough to turn the stomach of anyone who believes in either truth or justice. An amazing proportion of the media has given us a painful demonstration of the thinking — and lack of thinking — that prevailed back in the days of the old Jim Crow South, where complexion counted more than facts in determining how people were treated. One of the first things presented in the media was a transcript of a conversation between George Zimmerman and a...