Chinese anti-riot police men force protesters to leave the area outside the city government office in Zhejiang province's Ningbo city, Sunday, Oct. 28, 2012, where residents had gathered to protest the proposed expansion of a petrochemical factor. Thousands of protesters marched through an eastern Chinese city on Sunday, shouting for fellow citizens to join them in demanding that the government halt the expansion of a petrochemical factory because of pollution fears. (AP Photo/Ng Han Guan)

Associated Press
Chinese anti-riot police men force protesters to leave the area outside the city government office in Zhejiang province's Ningbo city,  Sunday, Oct. 28, 2012, where residents had gathered to protest the proposed expansion of a petrochemical factor. Thousands of protesters marched through an eastern Chinese city on Sunday, shouting for fellow citizens to join them in demanding that the government halt the expansion of a petrochemical factory because of pollution fears. (AP Photo/Ng Han Guan)
Chinese anti-riot police men force protesters to leave the area outside the city government office in Zhejiang province's Ningbo city, Sunday, Oct. 28, 2012, where residents had gathered to protest the proposed expansion of a petrochemical factor. Thousands of protesters marched through an eastern Chinese city on Sunday, shouting for fellow citizens to join them in demanding that the government halt the expansion of a petrochemical factory because of pollution fears. (AP Photo/Ng Han Guan)
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