You got a point. Demonstration as a form of free speech is an interesting dilemma. Review spam/bombing for example can be non-commercial, non-misleading, non-fraudulent, while still being a bit of a grey-zone. Removing them is also fairly controversial. Outside the web we have a similar problem when demonstrations and strikes are causing disruption in society. Obviously demonstration and strikes should be legal and are protected by free speech, but at the same time there are exceptions when they are not.

I am unsure if one would construct a objective fair model for how to moderate such activity.