As one can observe their own thoughts and feelings, the same with how we relate to one another.
With more politically homogenous audiences, the market demand for truth goes down a little bit in favor of an increased demand for viewpoint confirmation
[Narrowcast media turns boring political reality into a sensational reality show to entertain everyone who finds politics boring.]
A scam is like a virus that converts trust into cynicism, but it’s the news, in the name of keeping things entertaining and addictive, that distributes the virus across the whole country.
Geographic bubbles mean many people barely know anyone on the other political side personally, so the only information they have on what those people are like comes from information bubbles. And those bubbles have increasingly become hate-mongering machines.
An enemy is one whose story we have not heard.