WASHINGTON -- Some of the most pointed comments in the wake of Saturday's tragic shooting in Arizona regarding the dangers of vitriolic political discourse have come from Pima County Sheriff Clarence Dupnik, who said his state has "become the mecca for prejudice and bigotry." As a consequence of speaking out, Dupnik is now coming under attack, with a talk radio host even calling for his resignation."When you look at unbalanced people, how they respond to the vitriol that comes out of certain mouths about tearing down the government," said Dupnik at a press conference Saturday.