So Comedy Central didn't air South Park's Mohammed cartoon. At least they were honest about their reasons why-
Parker and Stone were angered when told by Comedy Central several weeks ago that they could not run an image of Muhammad, according to a person close to the show who didn't want to be identified because of the issue's sensitivity. The network's decision was made over concerns for public safety, the person said. Comedy Central said in a statement issued Thursday: "In light of recent world events, we feel we made the right decision." Its executives would not comment further.
They're scared- Islamist violence has intimidated them into silence on this issue.