China said on Tuesday at least 156 people were killed when Muslim Uighurs rioted in the restive region of Xinjiang in some of the deadliest ethnic unrest to hit the country in decades. The violence in the regional capital Urumqi on Sunday involved thousands of people and triggered an enormous security crackdown across Xinjiang, where Uighurs have long complained of repressive Chinese rule. In a sign tensions were still running high, stat...