Interesting comment in issue 872 of the Editor’s Letter in The Week magazine: “For much of the electorate, politics is a ritualized display of tribal identity, not a mere choice of policies. You are who you hate.”
IMO, it’s in the self-interest of our political parties (tribes) to drive ever harder wedges between one another, because the #1 function of a tribe is to out-compete other tribes. It’s hard-wired into our genes from our primate ancestors.
George Washington warned against the formation of political parties and urged the nation to choose leaders for reasons that transcended partisan politics. Hmmm.