Being but a humble distributor of the facts, I will refrain from comment.
I would like to recommend that you start the meeting by asking them what they want from the City. I suggest this because I think it will disarm the occupiers. I also think it will make the meeting less hostile. If at all possible, I would like to know who Jeff plans to bring to the meeting.
When you ask the occupiers what they want from the City, they will say they want to continue their freedom to assemble in public spaces: they believe it is their individual right to come together and collectively express, promote, pursue and defend common interests. The right to freedom of association is recognized as a human right, a political freedom, and a civil liberty. They will say they believe this freedom, documented in the 1st amendment, trumps all other laws.
Also, i do not think we should move to remove them until after November 17th. On November 17th, the AFL-CIO and Jobs with Justice plan to rally and march with the occupiers. If we remove them before November 17th, November 17th will turn into a rally and march against the Mayor instead of a rally and march about joblessness.
I don't think it's a bunch of anarchist kids anymore. I think there is a decent number of labor peeps and veterans that support this movement.