True enough

At best, only in the very short term. In the long term, it gives the government more of an excuse to militarize the police, and gets the population on their side. (Most people have a kind of visceral reaction to violence and chaos, which makes them rally around their government when it promises to restore order. This is often true regardless of whether or not they support the government in any other respect. It's why wars can make unpopular leaders popular).

In general, I think, Marxists shouldn't promote illegal activity. It gives the Feds reason to crack down on us, and in fact, proposing illegal activity is something Fed infiltrators often do. (Not saying you're a fed or an infiltrator, but it's a real police tactic you should be aware of).