The reaction to Brett Kavanaugh’s nomination to the U.S. Supremem Court demonstrates one reason why the court needs more justices with Mr. Kavanaugh's philosophy, even if you think Mr. Kavanaugh himself should not be on the court.
Words such as tribalism, identity politics and populism get thrown around a lot these days, including by me. (I recently published a book with those terms in the subtitle.) Definitions vary, but for practical purposes they're all simply different words for the same thing.
There are three attitudes or assumptions common to all of these forms of categorical thinking:
1) The mentality that says my team, my tribe, my people are good; our story is...