Go start a rally. Not a pro-war one, nor an anti-war. Start a rally FOR THE TROOPS. The military personnel who are over in Iraq, fighting and dieing for this war, whether they like it or not. They are over there doing their job to the best of their ability, with no bitching or questions asked, with the possibility of capture or death constantly looming about.
So c'mon, start a rally for them. It's not you have to be for or against this war to be behind the troops fighting in it. Sing songs, wave military flag, pray for their safe return, block traffic. After all, they don't get to say "This war is wrong!" or "Go USA!"; Right now, their only voice is the roar of a jet, the pop of a weapon, or the explosion of a bomb.
Besides, it's not like you can't wait until Monday to pick up the *-war thing again.