There are people with unreasonable ideas on both sides of the spectrum. What is odd is that most of them used to be on the right, the tea party crazy types who I guess have been replaced by the Trumpsters. And then you had your hippies and anarchists on the left but those weren't too numerous.
But now the number of unreasonable people on the left has increased exponentially with the the recent woke/SJW movement. Which is sad. I miss the old lefties who basically cared about Marxism/anti-capitalism, anti-war, environmentalism, LGBT rights, feminism, and free expression. They still said lots of dumb stuff but they weren't insane and now everyone's a f**king racist and offended.
The last 7 years or so the left has accomplished one really big thing at least which is the #metoo movement. Harassment is no long tolerated in workplaces etc and those people are rightly cancelled because that stuff is against the law. I'm much happier living in a post-#metoo world. For whatever reason the BLM movement didn't do a whole lot in terms of police reform, which is sad.