Comment by ethbr1

> Then it shifted in the last ten or fifteen years. When social media started having friends of friends, the tribalism kicked in. It was explained very well in a talk between Maria Ressa and Jon Stewart.

Also by Jon Stewart on Crossfire in 2004: https://m.youtube.com/watch?v=aFQFB5YpDZE&t=310s

The critique about what passes for debate is as apt today as it was then.