@reasoning logic,
It took me a little while to connect this video with something I'd previously read and realized the reason the crowd is repeating everything this guy is saying is so that those on the outskirts of the gathering can hear what he has to say.
At least I think that's the reason. Any alternative is far too weird.
Still, even knowing the reason for the crowd’s repetition, it makes for a peculiar viewing experience.
Frankly, I don't know how anyone but a few individuals can be getting anything out of these speeches.
Comprehension is not enhanced by the singsong chanting of the crowd; quite the reverse, and I don't know how the people who are doing the chanting are able to focus on anything more than repeating the words the speaker’s used, as opposed to the messages he is trying to convey.
With one notable exception, the crowd sounds like people caught up in a religious ritual, and nothing of the essence of what the guys is actually saying makes its way into the droning repetition. The one exception was when one man in the crowd can be heard consciously emphasizing one particular line of chanting which apparently struck a chord with him. That was it, one time.
Maybe routinely participating in this practice reduces the strangeness and allows for comprehension, but I don't think I could take it for a long enough time to get used to it.
Again, maybe the droning zombies prevented me from fully comprehending what this guy was saying, but I failed to hear anything enlightening about what "the majority of people around the world are wanting," or for that matter why you would be concerned for the safety of the police. I hope you're not looking forward to OWS being a "spark" that lights a conflagration.