E.J. Dionne: “The mainstream media and the Obama administration must stop cowering before a right wing that has persistently forced its propaganda to be accepted as news by convincing traditional journalists that “fairness” requires treating extremist rants as “one side of the story.” And there can be no more shilly-shallying about the fact that racial backlash politics is becoming an important component of the campaign against President Obama and against progressives in this year’s election.”