These guys are clearly not 'organized' for some purpose. No political movement, no ideology. It is really pure frustration by common people against authoritarianism. At least this is what it looks like.

To be frank, I'd doubt that they could topple the government. I am not sure if that is what they want either. I think if the government said "ok we cancel the plan to demolish the park" and pulled the cops back, they may as well go back home.