A man wears a face mask while walking on the Bund in front of the financial district of Pudong during a hazy day in downtown Shanghai December 6, 2013. China's stability-obsessed leadership has become... more 
A man wears a face mask while walking on the Bund in front of the financial district of Pudong during a hazy day in downtown Shanghai December 6, 2013. China's stability-obsessed leadership has become increasingly concerned by the abysmal air quality in cities, as it plays into popular resentment over political privilege and rising inequality in the world's second-largest economy. REUTERS/Aly Song (CHINA - Tags: POLITICS SOCIETY ENVIRONMENT TPX IMAGES OF THE DAY) less 
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Reuters | Photo By ALY SONG / REUTERS
Fri, Dec 6, 2013 12:39 AM EST