According to the book "Family of Freedom: Presidents and African Americans in the White House" (link) by Kenneth Walsh of US News: But Obama, in his most candid moments, acknowledged that race was still a problem. In May 2010, he told guests at a private White House dinner that race was probably a key component in the rising opposition to his presidency from conservatives, especially right-wing activists in the anti-incumbent "Tea Party" movement that was then surging across the country. Many middle-class and working-class whites felt aggrieved and resentful that the federal government was...