We're supposed to be better than that, and that is the reason this is supposed to be a great country. Those who have behaved as you suggest are judged by history to be savages and tyrants, and are a black stain on mankind's character....
The American antiwar protestor is a relatively new phenomenon, emboldened by shameful and treasonous successes during the Vietnam War. I haven't forgotten their betrayal. The photo below was published on the Indymedia/ San Francisco website last year during the spate of antiwar protests held throughout the city.
Just for a moment, put yourself in the shoes of someone who has a personal stake in this war. Your father or brother is in Baghdad surrounded by hate filled Mulims who have AK-47s, IEDs, RPGs and you're counting down the days until their tour is over. Now, look at the photo, and after you've given it honest consideration, get back to me.