Why the French? My first reaction is a flip "'cause they're French" response but you've asked an honest question and I'll try to respond in kind.
To a large extent the French were the most vocal opponents of the Iraq war. They weren’t just neutral, they mobilized others. Thus they generated a higher level of animosity.
Second of all, there aren't 74,000 American soldiers buried in Russia, Belgium, Germany. So I guess the deeper question is why aren't you against the French?
We went into WWI and WWII for our own reasons and not to "save" France. My Grandfather served in WWI and said that war was BS and none of our business. Gratitude is a dogs disease and the French ain't dogs. Why are you protesting? Because they didn't want to fight a war that was not in their national interests? Are the French supposed to support the USA no matter what we do because of WWII? If the cause in Iraq was so right what do you care that France didn't join us?