Ethnic Uyghur protesters in Urumqi , capital of Xinjiang region , take to the streets . China 's official media reports protesters attacked vehicles , including buses . Protest prompts a police sweep of the city . Protest may be a response to racial violence in southern Guangdong province .
Ethnic Uyghur residents in Urumqi , capital of Xinjiang region , take to the streets . China 's official media says protesters attacked passersby , burned buses . Protest prompts a police lockdown of the city . Protest may be a reaction to racial violence in southern Guangdong province .