America is a riven society. Political divisions have been on the rise for years. The gap between the Republican and Democratic Parties has grown in Congress, and the share of Americans who interact with people from the opposing party has plummeted. Studies tell us, “Democrats and Republicans both say that the other party’s members are hypocritical, selfish, and closed-minded, and they are unwilling to socialize across party lines.” Many Americans read news or get information only from sources that align with their political beliefs, which exacerbates fundamental disagreements not just about policies but about basic facts. So-called affective polarization—in which citizens are more motivated by who they oppose than who they support—has increased more dramatically in America than in any other democracy. “Hatred—specifically, hatred of the other party—increasingly defines our politics,” Geoffrey Skelley and Holly Fuong have written at FiveThirtyEight. My colleague Ron Brownstein has argued that the nation is “confronting the greatest strain to its fundamental cohesion since the Civil War.” Russell Moore: The American Evangelical Church is in crisis. There’s only one way …