Political tribe—as defined by the authors—is an even better predictor of views on political correctness. Among devoted conservatives, 97 percent believe that political correctness is a problem. Among traditional liberals, 61 percent do. Progressive activists are the only group that strongly backs political correctness: Only 30 percent see it as a problem.

If you look at what Americans have to say on issues such as immigration, the extent of white privilege, and the prevalence of sexual harassment, the authors argue, seven distinct clusters emerge: progressive activists, traditional liberals, passive liberals, the politically disengaged, moderates, traditional conservatives, and devoted conservatives.

Reality is nothing like this. As scholars Stephen Hawkins, Daniel Yudkin, Miriam Juan-Torres, and Tim Dixon argue in a report published Wednesday, “Hidden Tribes: A Study of America’s Polarized Landscape,” most Americans don’t fit into either of these camps. They also share more common ground than the daily fights on social media might suggest—including a general aversion to PC culture.

merican public life has become increasingly ideologically segregated as newspapers have given way to screens. But societies have experienced extremism and fragmentation without the assistance of Silicon Valley for centuries. And the polarization in the US began long ago, with the rise of 24-hour cable news. So just how responsible is the internet for today’s divisions? And are they really as bad as they seem?