Is Sarah Silverman the most racist, wicked, demented comedian alive today next to Sacha Baron Cohen?

Did you see her on the MTV awards last night? Why did she get away with Satanic jokes towards Paris Hilton, calling an actor a "dirty Pollock", Cameron Diaz "a white girl with a Hispanic name", Superman a "racist movie", and MTV producers racist for showing Samuel Jackson's reaction to her joke? Does she get away this because she is Jewish?