A slightly old Rolling Stone article discusses how China is strict with letting in bands to tour in their country. Apparently Avril Lavigne and Good Charlotte have had to postpone gigs due to restrictions.
The review process that a band must undergo before receiving permits to play in China is rigorous- they gather background info that includes song lyrics, bios, and the likely setlist for the show.
What is interesting is that the article mentions that NIN and Linkin Park were cleared with no problems. Apparently ‘I wanna fuck you like an animal’ is completely acceptable, but ‘Girlfriend’ presents problems for national security.
See, the Chinese get it. NIN is way better than Avril Lavigne.