Chinese police officer stand guard at a police barricade line during a protest against a planned refinery project in downtown Kunming in southwest China's Yunnan province Thursday, May 16, 2013. About... more 
Chinese police officer stand guard at a police barricade line during a protest against a planned refinery project in downtown Kunming in southwest China's Yunnan province Thursday, May 16, 2013. About 2,000 demonstrators concerned about pollution took to the streets in southern China to protest plans for a planned refinery on the outskirts of the city of Kunming. (AP Photo/Aritz Parra) less 
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Associated Press | Photo By Aritz Parra
Thu, May 16, 2013 7:55 AM EDT