I have seen examples.
I'm not a broadcast news journalist or television reporter, so I have no documentation or videos to show anything.
I've just seen how some people with Antifa act and they were not pleasant. No one confronted me personally, because I wanted to avoid that.
There were people who did get sprayed with pepper spray from the Antifa crowd and they also were throwing rocks at people.
Once that started up, I got the Hell out of there. It's not worth bodily harm.
All I have is my personal experience to share.