There were no organizers for g20, it was a protest not a parade. Occupy operates without a centralized leadership.
Occupy was shut down by the police and they never really made any big gains but they got their point across.
They also scared the elite class which is why the police responded the way they did. However, what it showed was that the younger generation is a lot more educated than their parents and grandparents, as most of them do not subscribe to Neoconservatism.
After the baby boomers die out it will be extremely difficult to push fascism, unregulated unfettered capitalism, tax cuts for the rich, and imperialist wars.