Two weeks ago in this column, I wrote about students who had been suspended from their high school for passing out candy canes because a Christian message was attached, and I also told readers about a preacher who was banned from praying before a state legislature because his prayer mentioned Jesus. Numerous e-mails from readers posed interesting questions: What if the notes attached to the candy canes had a verse from the Koran? What then would have been the school's reaction? What if the preacher had been a Muslim or a Buddhist? In other words, was the bias against religious...