Sure, but charter rights on protest are pretty fucking broad. As long as they were in public, not blocking access to private property, and not breaking any specific laws (violence, hate speech, etc) then it was a legal protest. That's part of the core problem here, it's a legal protest until it's not but by then it's too late to protect the people the formerly peaceful protest are targetting. But without restricting yours and my right to protest when we see the need to, we have to protect these jerkoffs right to protest as well, even when it's uncomfortable.