In tonight’s second installment of the two-parter, “Cartoon Wars,” Comedy Central censored out an image of Mohammad. South Park has thus far parodied sexually abusive Catholic priests, blacks, Asians, Jews, the handicapped, illegal immigration, Osama bin Laden, and even the Holocaust. You may not consider any of that funny, but that’s not the point. You have the freedom to change the channel, and I have the freedom to watch. Parker and Stone finally picked targets that Comedy Central feared, however;...