Senator Barack Obama fought back Saturday against accusations from his rivals that he had displayed a profound misunderstanding of small-town values, in a flare-up that left him on the defensive before a series of primaries that could test his ability to win over white voters in economically distressed communities. For a second day, Mr. Obama sought to explain his remarks at a recent San Francisco fund-raiser that small-town Pennsylvania voters, bitter over their economic circumstances, “cling to guns or religion or antipathy to people who aren’t like them” as a way to explain their frustrations. Acknowledging Saturday that “I didn’t...
