The Occupy Wall Street crowd that want to march on the rich people in NY will do themselves a disservice if things get out of hand. Personally, I would advice against it.
What you want to do is to turn your energy into something productive. I doubt most of the people they want to get the attention of will be there. They're rich. They've got jets and helicopters that can fly them as far as away as they can from the OWS protesters.
They can stay in their country or vacation homes. Just my two cents.