This may be more of an issue related to the socio-economic environment than to pollution
per se but it is still rather interesting bit of "sustainability" news in relation to the increasing fiasco developing with the hosting of the Olympics 2008:
Beijing 2008: bars forbidden to serve "blacks" and Mongolians
Asia News - July 18, 2008
Beijing (AsiaNews/Agencies) - For "reasons of safety", bars are forbidden to serve "blacks" and Mongolians or place tables in the street. Street musicians are being banned, and so is buying medicines containing "stimulants" without a prescription. Prohibitions are on the rise for the Olympic capital, while the first leaks reveal a grandiose fireworks display for the inauguration. Bar owners around the Workers' Stadium in downtown Beijing say that public security officials are telling them not to let in "blacks" and Mongolians, and many of them have even had to sign a pledge...
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CHINA Beijing 2008: bars forbidden to serve "blacks" and Mongolians, outdoor tables banned - Asia News