Paul Krugman in The New York Times:
My own understanding of the role of race in U.S. exceptionalism was largely shaped by two academic papers. The first, by the political scientist Larry Bartels, analyzed the move of the white working class away from Democrats, a move made famous in Thomas Frank’s “What’s the Matter With Kansas?” Mr. Frank argued that working-class whites were being induced to vote against their own interests by the right’s exploitation of cultural issues. But Mr. Bartels showed that the working-class turn against Democrats wasn’t a national phenomenon — it was entirely restricted to the South, where whites turned overwhelmingly Republican after the passage of the Civil Rights Act and Richard Nixon’s adoption of the so-called Southern strategy. And this party-switching, in turn, was what drove the rightward swing of American politics after 1980. Race made Reaganism possible. And to this day Southern whites overwhelmingly vote Republican, to the tune of 85 or even 90 percent in the deep South.
The second paper, by the economists Alberto Alesina, Edward Glaeser, and Bruce Sacerdote, was titled “Why Doesn’t the United States Have a European-style Welfare State?” Its authors — who are not, by the way, especially liberal — explored a number of hypotheses, but eventually concluded that race is central, because in America programs that help the needy are all too often seen as programs that help Those People: “Within the United States, race is the single most important predictor of support for welfare. America’s troubled race relations are clearly a major reason for the absence of an American welfare state.”
More here.