https://www.redstate.com/sister-toldjah/2020/09/15/how-its-done-lancaster-pa-police-shut-down-violent-rioters-with-proactive-policing/
It's easy. Put them in jail, and keep them there.
No catch and release, or low bail.
Before the pickle idiot brigade shows, allowing people to burn private property, ruin businesses isn't a libertarian position.
It's anarchist scumbag ideology in practice.