Generally do not like quoting others as I've done already on this thread; but sometimes there are those whose expression is so perfectly said.
Here is another:
"He who joyfully marches to music in rank and file has already earned my contempt. He has been given a large brain by mistake, since for him the spinal cord would fully suffice. This disgrace to civilization should be done away with at once. Heroism at command, senseless brutality, deplorable love-of-country stance, how violently I hate all this, how despicable an ignorable war is; I would rather be torn to shreds than be a part of so base an action! It is my conviction that killing under the cloak of war is nothing but an act of murder." -- Albert Einstein
Edited to add:
The Iraq war was most certainly ignorable. The blood of everyone who has died and been injured in that war, stinks on George W. Bush, no less than if he had cut their throats himself. It is difficult to come up with actions more insane.