“Free Speech” — to the left — has always meant shouting down opposing viewpoints.
Opposing view points are forbidden. One Way Street sydrome.
Antifa—their history and how they operate:
https://www.ammoland.com/2020/06/antifa-osint-profile-violent-leftist-group-part-1/
https://www.ammoland.com/2017/06/antifa-profile-radical-left-anarchist-group-part-2/
https://www.ammoland.com/2017/07/antifa-osint-profile-leaders-weaknesses-exposed-part-3/