If by "agent provocateurs" you mean "assholes who are not good-faith protestors but instead seizing on the opportunity to revel in mayhem with the protection of a big crowd of people to disappear into", sure, I absolutely believe that's the case.

If by "agent provocateurs" you mean "the police sent people in as agents to incite violence", you've lost me.

In any case: none of that could possible apply to the Edelweiss restaurant incident with Hammond.