For those in the West eager to uncover another Tiananmen-like crackdown by Chinese authorities last week in the Xinjiang provincial capital of Urumqi, the true story disappoints, even as it points to a potentially far-more-destabilizing social phenomenon: the emergence of race riots inside allegedly homogenous China. Note that President Hu Jintao's embarrassingly rushed departure from the G-8 meeting in Italy was not provoked by Sunday's riots by angry Uighurs, but rather by Tuesday's even uglier revenge riots by even angrier -- and better-armed -- Han Chinese.