Can we teach our way out of political polarization?

“You’re the people that built this nation. You’re not the people that tore down our nation,” former President Donald Trump told the collection of white supremacists, conspiracy theorists and would-be instigators of a second civil war who rallied with him in Washington, D.C., on Jan. 6. The crowd cheered at the idea that people like them — mostly white, mostly male — were the true heroes of American history. Then they ransacked the Capitol.