The whispers among some of his allies: that those who loathe Obama are driven in part by racism. Demonstrators are shown during a rally at Freedom Plaza in Washington on Saturday. Photo: AP AUSTIN – Eight months into Barack Obama’s presidency, as criticism of his administration seems to reach new levels of volume and intensity each week, the whispers among some of his allies are growing louder: That those who loathe the nation’s first African–American president, and especially those who would deny his citizenship, are driven at least in part by racism. It’s a feeling that’s acutely felt among...