Class bias works both ways. Urban elites tend to view rural America, especially Southerners, as a bunch of yahoos. Rural Americans, meanwhile, think big city types are elitist snobs who don’t love America. There are similar resentments between rich and poor, educated and not, and even Ivy League -State College. In private gatherings, where people think they are among the like-minded, one hears shocking bigotry along those lines.
There’s a huge cultural divide that’s been with us since well before (and, indeed, was a major factor in causing) the Civil War. Great national crises, like World War II and the 9/11 attacks, bridge those divides but only temporarily. And the permanent campaign that has characterized our politics in recent years continues to poke a stick at these wounds.