There should have been several fire trucks there with water cannons, or better yet an airport fire truck with a foam cannon from nearby SFO.
I would think by now some dedicated Trump supporter would attend the next event in an ordinary vehicle equipped with a passive device, like a super sound system, drown them out.
Its nothing to be armed almost anywhere, it takes brains to come up with a stealthy crowd dispersal system.
Where is the next Trump rally in CA? If a person wanted to they could find several old used fire trucks, or a hydro seeder on pickups, get a large amount of animal birthing lubricant, a super slippery mix.
Go have some fun on these anarchists, i hope they read this...
The sound system could be a highly effective and safe method of crowd dispersal.