How did we arrive to this point where a huge chunk of the population is in one reality and another huge chunk of the population is in another reality? Segregation of information sources? Politicization of media outlets? Self-reinforcing social bubbles? A combination of all of them and more?
The people do it to themselves. They believe what they want to believe, hear what they want to hear, see what they want to see. This is still largely a free country where there are multiple independent sources of "news", and individuals voluntarily expose themselves or not to whatever they choose. As far as I know, nobody is tied down in a chair and forced to watch certain TV shows or listen to certain radio shows fo…
People don't simply consume information and form ideas like a summary-generator. There's a strong component of imitation and rehearsal that is disrupted when the patterns of engagement with other people are drastically changed.