The Portland Lap; a method for handling removal from a park

http://www.portlandoccupier.org/2011/12/15/occupy-portland-outsmarts-police-creating-blueprint-for-other-occupations/

"After marching for 3-4 hours, we eventually found ourselves a block away from the park that we’d been forced out of, so we took it again. The riot police lined up and prepared to take the park again, but the attempt was called off and the police just left. They realized that they would have to go through the standard military procedure of clearing the park inch by inch, only to have us go back out into the streets and march again while they, one more time, trailed along helplessly- their entourage functioning as a part of the march, creating an even larger disruption to traffic (the marchers covered a city block, the trailing police took up another city block, effectively doubling the size of the obstruction to traffic).
In summary: when the cops come to clear the park, don’t resist. As they are preparing for their military maneuver and use of force that the Occupiers cannot reasonably be expected to resist, the occupiers should be packing up their tents and baggage and loading them into wagons, bicycles, backpacks, etc.

The police will eventually trim down their entourage because they realize that they are helpless. Eventually, work your way back to the park. Or, if the police have fenced off the park, head to another park. If the police force you out, march again and they will be forced to follow. Eventually, they will inevitably come to the conclusion that they would rather have you in a park than disrupting traffic."

I'll have to think about this a while.  It sounds like a great tool to keep in mind when the situation is ripe.  I don't think it's a tool that can be relied on completely, but it's definitely worth considering. And it worked here.