I've had a look at the Climate Camp website and my offices seem to be pretty much in the centre of things (right next to the Gherkin). We might all be working from home on those days. However, I'm impressed by the amount of organisation these people have put in to it and I'm sure they will be trying to keep a lid on pointless vandalism. I suspect that what will happen is that after the main protests are over and people are on their way home a small element will stay behind to try to cause serious trouble.