In a most unusual offensive for a U.S. President, Barack Obama has chosen to go after the citizens of his own country by smearing his critics and opponents. In one interview, Obama referred to the Tea Party core group as a bunch of 'birthers' who do not believe he is eligible for public office. In another, he claimed that the rhetoric used by his critics, even Rush Limbaugh, Sean Hannity, Glenn Beck, and others is 'inciting certain persons to violence.' And in yet another interview he decreed that all of his critics should 'tone it down.' Translation--sit down and shut...