Most of these have been gleaned from homemade signs carried in demonstrations around the San Francisco Bay & Monterey Bay areas since 1/03.
On War Itself:
If war is not evil, then evil has no meaning.
War: the ignorant against the innocent.
Waging war to stop terrorism is like putting out fire with gasoline.
Why do people kill people who kill people to show that killing people is wrong?
The ones who call the shots are not among the shot.
More blood won't cleanse bad blood.
War is a lack of imagination.
War is a failure of government.
War is so last century.
War is always a mistake.
War is terrorism with a bigger budget.
War wouldn't be prudent.
This war will return after the commercial break.
Where does it stop?
All mothers' tears are the same.
All blood is red.
US foreign policy is collateral damage.
Kill one person & it's murder; kill thousands & it's foreign policy.
No more parentless children.
Inner city teachers against legitimizing violence.
Genius against war.
An injury to one is an injury to all.
When you fight evil with evil, evil wins.
They're selling war; we're not buying.
Stop the war junkies.
Death is no threat to the suicidal.
And the last ... which I find the most poignant:
The principal cause of war is war.