This. Leave people alone to do their business. Pretty soon there will be consequences.
It's one thing to do it as a public protest like in front of a courthouse. Fine, whatever gets your jollies off, showing the world you are a moron...not my circus, not my monkeys.
But busting in on events like this, or coming into restaurants where people are just trying to have a meal, or otherwise hassling the normal, every day normal people, well, it's not going to gain them any allies, it will lessen any support for their side, and it includes the chance of somebody saying "To hell with this *expletive deleted*it" and opening a can of whupass.