Slipping pork into a Muslim's meal is going beyond a joke. Muslims seriously believe they will go to hell indefinitely if they consume pork knowingling or unknowlingly. People who call that a "joke" seriously need to step back and rework their manners.
Essentially giving a Muslim pork is the same as saying "I hope you go to hell."
It's Jon Steward defending South Park against the reaction of "revolutionary Muslims" and showing nearly every major religion in the world being dinged at (majority going towards Jews and Christians).
Message at the end is "Those threatening death in the name of religion for politics can go **** themselves."
The original rant was that a lot of radical Muslims were sending death threats towards Comedy Central over the episode where they were to air an image of Muhammad on TV in the form of him being inside a teddy bear.