We know about Mike Nifong, and it looks like he's going to get his comeuppance. Yet the question remains: Why would a seasoned prosecutor like Nifong flout the rules in so many ways in the Duke case? Why would he publicly describe the Duke lacrosse players as "rapists" before that had been established in a court of law? Why would he suppress DNA evidence that the defense was entitled to see? Why, in short, did he go so far before the facts were in? One of Nifong's public comments provides a clue. He says he wanted to protect the town...