Because its a real symbol of Chinese efforts to undermine the online censorship campaign. The video has millions of views in China, and Grass-Mud Horse toys and shirts are in high demand. Everyone knows the song is openly mocking government censorship, but they can't do anything about it because the words can easily be used in a benign context.
No idea if it end up any more politically significant that a South Park episode, but its nice to see the effort. Your mom.
I disagree. It's because of the incredible value and economic potential of alpacas!! You can't lose - wool, meat, milk, and companionship, the alpaca is truly the most versatile of animals!! Order your pack now, only 20 play monies.