White House chief of staff Rahm Emanuel is notoriously profane and uncouth. So it's not surprising that The Wall Street Journal reported this week that Emanuel had referred to some congressional Democrats as "retarded" in a private meeting with strategists. This has sparked a national kerfuffle. Who can quarrel about the word "retarded" in this context? It is obnoxious and unnecessary. We should do our best to avoid it. After all, our goal as Americans must be to offend the guilty (some congressional Democrats) without dragging the innocent (the mentally disabled) into the fray. But what was even more disturbing...