If "such lies and errors had been directed at the Koran or the Holocaust," said Archbishop Angelo Amato, the Vatican's secretary for the congregation for the doctrine of the faith, "they would have justly provoked a world uprising." The archbishop was speaking of "The Da Vinci Code," the Ron Howard film that debuts at Cannes and opens worldwide this week, and is expected to gross $500 million by summer's end. The archbishop's point is undeniable. Blasphemous cartoons of the Prophet with a bomb in his turban, published a few months ago in a Danish newspaper and reprinted on the front...