From Newsweek:

Ever since the Tea Party phenomenon gathered steam last spring, it has been plagued by charges of racism. Placards at rallies have depicted President Barack Obama as a witch doctor, denounced his supposed plans for “white slavery,” and likened Congress to a slave owner and the taxpayer to a “n——r.” Opponents have seized on these examples as proof that Tea Partiers are angry white folks who can’t abide having a black president. Supporters, on the other hand, claim that the hateful signs are the work of a small fringe and that they unfairly malign a movement that simply seeks to rein in big government. In the absence of empirical evidence to support either characterization, the debate has essentially deadlocked.

Until now, that is. A new survey by the University of Washington Institute for the Study of Ethnicity, Race & Sexuality offers fresh insight into the racial attitudes of Tea Party sympathizers. “The data suggests that people who are Tea Party supporters have a higher probability”—25 percent, to be exact—”of being racially resentful than those who are not Tea Party supporters,” says Christopher Parker, who directed the study. “The Tea Party is not just about politics and size of government. The data suggests it may also be about race.”

Surveyers asked respondents in California and a half dozen battleground states (like Michigan and Ohio) a series of questions that political scientists typically use to measure racial hostility. On each one, Tea Party backers expressed more resentment than the rest of the population, even when controlling for partisanship and ideology. When read the statement that “if blacks would only try harder, they could be just as well off as whites,” 73 percent of the movement’s supporters agreed, while only 33 percent of people who disapproved of the Tea Party agreed. Asked if blacks should work their way up “without special favors,” as the Irish, Italians, and other groups did, 88 percent of supporters agreed, compared to 56 percent of opponents. The study revealed that Tea Party enthusiasts were also more likely to have negative opinions of Latinos and immigrants.

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