"One World, One Dream" is China's slogan for its 2008 Olympics. But there is one nightmare that China shouldn't be allowed to sweep under the rug. That nightmare is Darfur, where more than 400,000 people have been killed and more than two-and-a-half million driven from flaming villages by the Chinese-backed government of Sudan. That so many corporate sponsors want the world to look away from that atrocity during the games is bad enough. But equally disappointing is the decision of artists like director Steven Spielberg -- who quietly visited China this month as he prepares to help stage the Olympic...