there's a narrative on the left to blame this kind of thing on government agitators. the term for it, agent provacateur, est en francais. it actually traces to bismarck, and the french uprisings of the 19th century. i'm sure - certain - that the government had some spies working to cause unrest to justify the clampdown, but this doesn't match the fingerprint. people are talking about masked grown men smashing through windows with specialized tools and removing equipment and specialized goods onto waiting vehicles, not dumb kids throwing rocks at storefronts. this not a starving mass and they're not stealing bread. they're not focusing on revolutionary overthrow. they're stealing phones, electronics, running shoes and ram in order to resell it. to the extent that any young people are involved in this, these are entitled, middle class kids looking to make a quick buck, not a revolutionary left. the looting was planned and organized and intended as profit-seeking behaviour. these items are going to come up for sale on ebay, etc.
the left should be supporting proper policing to clamp down on the right wing extremism responsible for much of the chaos, but the difference of scale looks to me like basic property crime and should be treated like basic property crime.