The fast changing realities of American life are particularly threatening for the Trump base of white, non-college educated, rural voters. It makes them open to what social scientists call “ingrouping.” In other words, people seek the company of people like themselves in terms of economic class, race, and political ideology. And they turn against people outside their club, blaming them for their problems. A prime example comes from an in-depth look at the people who took part in the attack on the Capitol that Republicans don’t want to review. Of the almost 400 people arrested or charged, most are white males and they typically come from cities and towns “where the non-White populations are growing fastest,” Robert Pape, the director of the Chicago Project on Security and Threats, wrote in an April column in The Washington Post. Are those rioters upset about loss of jobs? No, according to Pape. The primary factor, he wrote, is “fear of the ‘Great Replacement.’”