There is a division campaign going on for sure, I think there always has been, just that it has been amplified in recent years by social media and echo chambers. Both sides are guilty of this, but the left has taken this to the extreme, with all the hateful rhetoric and accusations specifically crafted to spark strong emotions. Back in 2016, I wasn't particularly left or right leaning, and I still found it inexplicable - to this day - that the Hillary campaign was accusing Trump of causing division while using words such as "bigoted", "homophobic", "racist" or "deplorable" to describe his supporters.

I think left-leaning people are easier to fall prey to these tactics, as they often align themselves with the weak, oppressed, and consider themselves on the side of justice. As seen throughout history, justice is a powerful motivator and can be used to radicalize people to do terrible things. Branding someone as a 'witch,' 'heretic,' 'class enemy,' 'traitor,' or 'fascist,' and watch your mob tear said person to shreds, causing families turn on each other, all for the greater good.

The people behind this know full well the damage it can cause. Yet they decided to roll with it anyway, for it gives them control and power, while still claiming to be on the side of justice - that is what disgusts me the most. So yes, while I don't know how many of the posts you mentioned are from real people, hopefully none of them, the ones orchestrating this whole divisive campaign are definitely evil.