On a cold, clear night in January 2008, when Iowa Democrats selected Barack Obama over a white woman and a white man in the state’s first-in-the-nation caucus, the moment felt transformative. If voters in this overwhelmingly white, rural state could cast their ballots for a black man as president, then perhaps it was possible for the entire nation to do what had never been done; perhaps America had turned far enough away from its racist past that skin color was no longer a barrier to the highest office of the land. In the months that followed, as Obama racked up primary victories, not just in the expected cities but also in largely white Rust Belt towns and farming communities, it seemed evidence for many Americans that the nation had finally become “post-racial.”

Of course, that post-racial dream did not last long, and nothing epitomizes the naïveté of that belief more than the election last week of Donald J. Trump. As I watched my home state of Iowa join the red flood that overtook the electoral map last Tuesday, I asked myself the same questions that so many others did: What happened? Why had states that reliably backed Obama — states like Iowa, Michigan, Wisconsin and Pennsylvania — flipped Republican?

I was struck by how quickly white pundits sought to tamp down assertions that race had anything to do with it. It was, it seemed to me, almost a relief to many white Americans that Trump’s victory encompassed so many of the heavily white places that voted for a black man just years before. It was an absolution that let them reassure themselves that Donald Trump’s raucous campaign hadn’t revealed an ugly racist rift after all, that in the end, the discontent that propelled the reality-TV star into the White House was one of class and economic anxiety, not racism.

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What’s missing from the American conversation on race is the fact that people don’t have to hate black people or Muslims or Latinos to be uncomfortable with them, to be suspicious of them, to fear their ascension as an upheaval of the natural order of things. A smart demagogue plays to those fears under the guise of economic anxieties. Things not as good as you hoped? These folks are the reason. Kelley, the historian, said white Americans have ignored race when it serves them and defaulted to it when it suits them. “We think of interest as an objective thing that floats above, but it is subjective,” he said. “Race always plays a role. It never disappears.”