Chinese riot policemen patrol in Kangdin

Chinese riot policemen patrol in Kangding county, the capital of Ganzi Tibetan Autonomous Prefecture, in China's southwestern Sichuan province on March 20, 2008. For centuries, the Kangding county has been the trade center of the Han and Tibetan cultures.It's also the traffic hub of west Sichuan and the gateway to Tibet as China said it was in a "life or death struggle" over Tibet as dramatic new footage emerged of Tibetans rampaging on horseback and destroying a Chinese flag. AFP PHOTO/TEH ENG KOON (Photo credit should read TEH ENG KOON/AFP via Getty Images)