Is this thread about why we currently have a hard left/right division in the country and reflected on this site?
One component is the twitter, facebook, youtube algorithm media bubbles people are in. Solution: Take a hard look at your media consumption and make deliberate steps to diversify. There is the CR bubble and DT bubble on this site. We should probably understand that those two bubbles likely overlap with certain twitter networks and certain cable news networks. That guy that kept posting youtube videos as evidence of voter fraud some time back is an obvious example.
Another component is the right side of the US politics has moved further right and adopted identity, fear-based politics. Solution: The GOP needs to lose political power in the US or they need to change.
Probably underlying those two components are the reasons why a sizable percent of our population are susceptible to media bubbles, propaganda, along with identity/fear-based politics. Some describe this as a lack of education, critical thinking, self awareness, life experiences, or media understanding. Solution: Revamp and reinvest our education system so that something like this is less likely happen in 2040.