The partisan divide now dwarfs demographic differences on key political values, by Abigail Geiger. From the Pew Research Center, on US research in 2017.
Two decades ago, the average partisan differences on [10 political values] were only slightly wider than differences by religious attendance or educational attainment, and about as wide as differences across racial lines. Today, the partisan gaps far exceed differences across other key demographics.
The PC fantasy-land stuff on the left is increasing the gulf between the left and the rest on so many issues now.