... As recently as 1990, more than 40 percent of whites supported a homeowner’s right to discriminate on the basis of race; by 2008, that number had dropped to 28 percent (including 25 percent of highly educated Northern whites). The same goes for the percentage of whites who said blacks were “less intelligent” than whites, which dipped from nearly 60 percent in 1990 to less than 30 percent in 2008. And so few whites support school segregation that the General Social Survey has dropped the item from its questionnaire.Whites are also more tolerant of interracial marriage. When first measured in 1990, note the authors, fully 65 percent of whites opposed unions between close relatives and black Americans. By 2008, that number had declined to 25 percent, and in a 2013 Gallup survey, 84 percent of whites said they approved of interracial marriages between blacks and whites. Some of the most comprehensive polling–outside of the General Social Survey—comes from the Pew Research Center. According to a 2010 report, 64 percent of whites say they would be “fine with it” if a family member married a black American, while 27 percent say they would be “bothered” but accepting. Only 6 percent say they would reject the marriage. Support is lowest among older whites, and highest among white millennials, who don’t differ in approval from their black and Hispanic peers.