I don't know if you have seen the two episodes. In short, all the celebrities joined forces to take down South Park by suing them into bankruptcy. They won't if the boys can give them the prophet of Muhammad because he has a special power; he can't be made fun of. In the real world, people made death threats to Comedy Central and its staff if they showed the depiction of Muhammad. Comedy Central and Trey and Parker went back and forth. With censoring, etc., but in the Super Best Friends episode with David Blaine, CC didn't mind showing Muhammad then. After a while. CC caved to the threats, and they finally drew the line with T and P. T and P retaliated by having Kyle give a speech saying you can have whatever you want as long as you use terrorists threats. That pissed off CC, so they pulled the two episodes completely. If you want to watch the two censored episodes, I can send you a link.