Here’s the timeline: On November 8, the first day that Chinese leaders gathered for their once-in-a-decade Party Congress to announce the next generation of leaders, a Chinese-language Facebook page posted a clearly doctored photo of the party’s top officials doing the dance from South Korean pop hit Gangnam Style. On November 13, popular China blog Beijing Cream picked it up. The congress ended two days later, and on the 17th, a widely followed user on China’s popular Twitter-like service, Weibo, posted the image with a banal message about the song’s popularity. Censors pulled it down almost immediately.
via Why is China censoring a fake photo of its leaders doing ‘Gangnam Style’?.