Beijing Air Pollution Reaches Dangerous Level

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Chinese paramilitary police officers march during the flag-raising... News PhotoBeijing,Ceremony,China - East Asia,Environmental Damage,Environmental Issues,Flag Raising Ceremony,Horizontal,International Landmark,Paramilitary,Police Force,Pollution,Serious,Tiananmen SquarePhotographer Collection: Getty Images News 2013 Getty ImagesBEIJING, CHINA - JANUARY 29: Chinese paramilitary police officers march during the flag-raising ceremony with severe pollution at Tiananmen Square on January 29, 2013 in Beijing, China. The 4th dense fog envelops Beijing with pollution at hazardous levels in January. (Photo by Feng Li/Getty Images)