A local boy watches Chinese paramilitary police wearing riot gear march in formation as they patrol the streets of Urumqi, Xinjiang Autonomous Region, in China July 6, 2009. At least 140 people have been killed in rioting in China's northwestern region of Xinjiang, with the government blaming exiled separatists for the Muslim area's worst case of unrest in years. Hundreds of rioters have been arrested, the official Xinhua news agency reported, after rock-throwing Uighur people took to the streets of the regional capital on Sunday, some burning and smashing vehicles and confronting ranks of anti-riot police. REUTERS/David Gray (CHINA CONFLICT MILITARY POLITICS)