Elizabeth Kolbert, in an article titled “How Politics got so Polarized”, which appeared in the Jan. 3 issue of “The New Yorker,” discusses hyperpartisanship. She notes that only about a quarter of new posts on facebook by Democrats are viewed by Republicans and vice versa. She writes: “When people confer with others who agree with them, their views become more extreme.”

Kolbert concludes: “Could “superordinate goals” help depolarize America? There would seem to be no shortage of crises for the two parties to work together on. The hitch, of course, is that they’d first need to agree on what these are.”

https://www.newyorker.com/magazine/2022/01/03/how-politics-got-so-polarized