Actually, tom
You are the one making the original claim about 'most' anti-war protestors. The burden of proof is on you.
"I think you're going to find your opinions on this are more rare than you think. "
Possibly, I can't poll the world on this topic. HOWEVER I have heard VERY few people who claim No WMD in Iraq. Not even in France and Germany. There IS a lack of definitive proof of WMD in Iraq, but I think the likely source for that lack of proof is the obfuscation of Iraq. That obfuscation presents a preponderance of evidence IMHO, to borrow legal terminology.
Davin