For all the whining some do about echo chambers, I question whether they recognize the ultimate echo chamber:
Colleges and universities.
Consider how quickly colleges and universities cancel appearances by conservative speakers, censure conservative student newspapers, etc.
It's not just Colleges and Universities that are just about 100% Far Left Progressive FASCISTS, it is the Media, Entertainment, Social Media, Tech, Metro areas, and other institutions and corporations that have been taken over. The election of Trump was a MIRACLE.
We have been in an era of soft tyranny for a while now, and Trump is merely a bump in the road for the Democrats and their supporters. They are in it for the long haul to Fundamentally Transform the U.S. into a European like socialist state, or worse.