Political sectarianism is a growing threat to U.S. democracy

On one level, partisan animosity just reflects the persistent differences between the two parties over policy issues. Over the past two decades, they have fought bruising battles over the Iraq war, gun rights, health care, taxes and more. Perhaps hard feelings wouldn’t necessarily be sectarian in nature. But the two parties have not only become more ideologically polarized — they have simultaneously sorted along racial, religious, educational, generational and geographic lines. Partisanship has become a “mega-identity,” in the words of the political scientist Lilliana Mason, representing both a division over policy and a broader clash between white, Christian conservatives and a liberal, multiracial, secular elite. And as mass sectarianism has grown in America, some of the loudest partisan voices in Congress or on Fox News, Twitter, MSNBC and other platforms have determined that it’s in their interest to lean into cultural warfare and inflammatory rhetoric to energize their side against the other. The conservative outrage over the purported canceling of Dr. Seuss is a telling marker of how intergroup conflict has supplanted old-fashioned policy debate.