Due to depictions of the Prophet Muhammad the creators of South Park received death threats from extremist groups and so these shows (episodes '200' and '201' of season 14) were pulled from the SP website and from publication in their box sets.
It was particularly ironic as it was a commentary of censorship and at the end of the biopic a speech was made that 'all you need to do is threaten people to have your way' - which ended up actually happening to these episodes.
Almost seems like more comedy genius, in the creation of the ultimate irony.
Watched them last night, and recommend them for people to watch.
100s of personal statements examples here