Have you made the mistake of equating these people with the peace and love hippies of the 60s? Different group here. OWS and the associated populist movements are more similar in temperament to the socialist/populist/labor movements of the 20s-30s. In reality they are not like anything we have ever seen with their tech savvy social networking skills. I can't say where it all will go but someone has to do something about the boomers trying to take it all with them when they die.
I lived the 60's. By the time the Dem Convention rolled around no one was protesting peacefully anymore.
Bernadette even more than Bill at the time was into violent revolution. We had the Panthers, Karenga's crew, Weathermen the violent offshoot Bernie headed from SDS, and so many other groups.
But it wasn't about protesting. It was about rioting. Hell's bells cities burned.