“and then, there’s this ...”
Decades ago, I used to attend ‘teach-ins’ at ESU. I went there to learn what they’re ‘teaching’ and it sounds a lot like these people. It never amounted to anything (no rioting to speak of) and they didn’t care who went to their ‘teach-ins’, but yes, these crap could have been ended back then, if the FBI or anyone else bothered to look. Instead we let them fester and continue, and finally they got their chance. And don’t forget, if people on our side do the same, we get arrested, long before any violence.