No surprise here, I think this trend started with Clinton and got worse and worse.

I also think it was kind of "planned" by the 2 political parties. They discovered contributions from the "regular folk" would increase if they demonized the other side. Because they like money more than people, the demonizations got worse and worse.

As time went on, some politicians got very good at this and some started to believe the other side is evil. So now seems some people running for office now only care about themselves and lie and say anything to get in, and people believe the lies because it is us vs them.