In the U.S., we need to learn lessons from the last Gilded Age around the turn of the 20th century. There was a Populist Progressive era. Populists and Progressives needed each other—and still do. Without populists, progressives can turn into a bunch of affluent, out-of-touch urbanites who have little in common with regular Americans. Without progressives, populists can turn into anti-intellectual, paranoid bigots. The progressive valorizing of cultural diversity is balanced by populists’ emphasis on cultural cohesion. David Brooks explains it: theatlantic.com/magazin…