Noam Chomsky (who's Jewish) is one of the foremost authorities and scholar willing to speak truth to the powers that be. Ali G (Sacha Baron Cohen, who's also Jewish) is also daring in confronting racism and all manner of hypocrisy.
Sarah Silverman (also Jewish), like most comedians, has the ability to point the finger in the right direction and mock what many quietly realize but are not allowed to voice.
The "Right Wing Media"
The right wing media is 99% of the media we have, fails us. It is tightly controlled by many mechanisms. Programming and content is dictated from power centers. And if that means installing an Israeli as Homeland Security chief in America -- what (military-industrial) corporate power wants, it gets. And Americans largely remain asleep.
WARNING: Offensive lyrics