The divide in America traditionally created a tension of opposites, from which both sides learn and grow. This divide used to be based on political sports. One could debate and still be friends.
However, since the election of Trump, the left has been using more of a war approach, deepening the divide beyond what was normal. The Democrats began leading the country toward a new Civil War. It was like the past was repeating itself; General Bubba Clinton. Brothers became enemies.
The bottom line was the Democrat party had become extra corrupt during the Obama Years. Biden and others had learned to money launderer tax payer dollars through foreign aid, family members and corrupt foreign entities; Ukraine, China, Iran, etc. The DNC fixed the primaries against Bernie Sanders so Hillary would win. They showed that America has a dual justice system when Hillary ddi not pay for her crimes. The DNC spied on the Trump campaign using the power and intel resources of the US government; FBI and CIA. That was way worse than Watergate and anything Nixon had done.
When Trump won, he threatened to undermine the syndicate and expose the swamp. The Democrats and the mainstream media; fake news, began a coup to overthrow a duly elected President, since he was considered a threat to powers to be; drain the swamp.
This began a constant negative assault on the President and his base, with 90% negative news through all the Democrats controlled media complex. Most of this fake news was an illusion based on Intel schemes and the arrogant ignorance of the main street media.
Remember the collusion delusion, where the self proclaimed smartest people in media got it all wrong for over two years? This was a scam from day one and demonstrated that arrogance does not mean smart. There was also a push to alienate Trump supporters; deplorable, which deepened the divide. Trump and the Republican party have been on the defensive for three years, due to these organized efforts by the swamp, to avoid exposure and stay out of jail for their crimes.
The tide is starting to turn, since all the scams of the left, including impeachment, did not work. These efforts are now starting to alienate many in their own base. The Democrats used to support the underdog. This is noe seen as Trump causing blue color Democrats to change sides. The healing is beginning. Punishment of the criminals may needed so the healing can continue. As long as the liars and thieves run free, they will be a need to maintain the divide as a way to defend themselves and avoid justice.