Groups like ANTIFA and other trouble makers have agitators that sport high end gear. Lot of 'police issue' gear is widely available commercial off the shelf stuff anyone can get. If you want to go down a rabbit hole, look up some of the MOTO pics these antifa types assemble and the gucci gear they have.
For being unemployed downtrodden losers, some of these clowns have thousands invested in rifles, gear, and commo.
Pretty sure less than lethal shotty shells, rubber bullets, and the 40mm foam rounds are kosher. Unless burning stuff down and rioting are okay in you're block if the 'protestors' belong to your tribe.
Maybe keep some DRM guys with actual rifles in case it turns into a two way range.
Also, there's a difference between a protest and a riot. But hey... if it's anyone anywhere 'near conservative' they're automatically treated like domestic terrorists. You don't see the rest of the population burn shit down when 'conservatives' get gunned down.