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A man paints graffiti on a wall of the Azteca stadium during a graffiti contest in Mexico City February 15, 2009.[Xinhua/Reuters]
![A man paints graffiti on a wall of the Azteca stadium during a graffiti contest in Mexico City February 15, 2009.[Xinhua/Reuters]](http://images.china.cn/attachement/jpg/site1007/20090216/000bcdb95f1d0b030b7c1b.jpg "A man paints graffiti on a wall of the Azteca stadium during a graffiti contest in Mexico City February 15, 2009.[Xinhua/Reuters]")