Depends on the cause.IMHO, you'll need a few hundred more posts before you incite this bunch to riot.
Antifa are anarchists they're anti-government, anti-constitution, anti law enforcement. Alt-left is the same.
Blm is the same and we all know it from the riots, looting, burning buildings, shooting police, everything we saw.
I ask again do we allow them to continue? You can read the antifa terrorist page dephomelandsecurity.