Why would demos stop an invasion of Iraq? This mythology of the rally as all powerful weapon is bizarre. A demo does not deny funds to the military machine, it does not ground bombers, or shut down army bases. What power is exercised by a demo by itself?
Demos can be nice media events, but only if the media covers them and convey their message. I participated in mass rallies against the first Iraq war-- didn't do much at all as I remember.
How about we take all the time of those who prepare for the rally, attend the demo, and the time many spend in jail and doing work getting them out-- instead, skip the demo and spend the same amount of time door-knocking to talk to folks about why war is a bad idea and global justice is a far better approach to assuring global security.
-- Nathan Newman