I love that report of "stabbing" when the cop was probably scratched on the hand, and probably couldn't tell what or who scratched him. I love that an ambulance somehow managed to get in to take that one cop away with said scratch.
I also love how there'll either never be footage of the event (but there'll be a symbolic arrest), or that there'll be preposterously precise footage (like CSI "enhance" stuff) and some impossible item that was used in a frothing crowd of hundreds to thousands of people to do that.
That said, I hope the attack is either false or was not severe/was accidental. It's wrong to attack cops. People - protestors, officers, workers, etc - need to be safe.
Finally, absolutely not re: a leader for OWS. A leader is not just a leader - it's a target. The second someone becomes a figurehead for this thing, they can attack and discredit the movement based on that person, and not based on the topics. I'd hate to see this peter out because the guy who is the face of the movement is some guy who didn't pay some tax, or had some conviction, or some other thing that is unrelated to the points being made.