If Jews get offended at SouthPark, then they should stop being so fucking Jewish.
Seriously, every single race or religion can find something to be offended about if they look hard enough I'm offended by the way stupid people are depicted in cartoons, because I'm stupid. Everything is fair game, everything from your religion, your skin colour, and any diseases you might have. Accept it, laugh at it, because people need to stop taking this crap so seriously. There is more offensive material in Family Guy and the Simpsons than in South Park IMO, because South Park has always had the same attitude, you know what to expect - nobody has a right to be shocked at what they see in South Park.
Personally I can see me choosing the Jew class, sounds like a pretty good idea to have the power based on health, I'm intruiged.