I’ll reiterate my original point.
Back in the day, the IWW and other radical groups had their own folks in the crowd to make sure that no one threw a rock at a cop. The cops loved to send in bad actors who would give them an excuse to come in.
Some one who throws a brick is putting everyone else’s safety at risk. If you really feel the need to fight a cop, go up and punch them yourself. Don’t hide behind someone’s grandmother and call yourself a hero.
https://bookshop.org/p/books/a-deadly-shade-of-gold-a-travis-mcgee-novel-john-d-macdonald/9580117?ean=9780812983968&next=t
This book is a thriller written around 1965. About two thirds through the book a character shows up. He’s was born rich and he’s a spoiled idiot with questionable habits. Turns out he’s a Russian asset who is happy to help destroy the system that gave him everything.
Of course, this is a work of fiction and shouldn’t be treated as anything else.