I'm reaching for a "Just the facts, ma'am" NSA joke
But, also, I thought the video was pretty effective. I don't know if this sort of thing is enough to start any sort of major movement, but it's definitely a good start.
I checked out OWS in Zuccotti Park several times, and agree with those who are saying it was a disaster. Which is not to say that there wasn't anything good there - but all of the effective protesters (including musicians, and I don't mean the drum circle) were on the outskirts and on the sidewalks. Of course, they would not have had the impact they did if there hadn't been a tent city behind them.
The one instance I witnessed at OWS where it felt like a "real" protest - that is, something that feels like it's having an effect over an audience and inspiring passions - was when Stills & Nash sang a couple songs.
That illustrated that what protest movements need are organization and charismatic, perhaps single-minded leaders, which OWS lacked entirely on both counts. A couple of old guys, without microphones, grabbed everyone's attention and rallied everyone around a cause (which happened to be "teach your children well", nothing too radical) in a way that no one else involved in OWS was able to.
So, I'm glad to see this video with so much celebrity support. Like it or not, it's effective.