Before this movie does the same thing to public opinion on the Iraqi war as the Kim Phuc Phan Thi picture did to opinion on the Vietnam War, consider a different perspective. Robert Kaplan wrote an article in The Atlantic November 2002, several months before the war.
"Keep in mind that the Middle East is a laboratory of pure power politics. For example, nothing impressed the Iranians so much as our accidental shooting down of an Iranian civilian airliner in 1988, which they believed was not an accident. Iran's subsequent cease-fire with Iraq was partly the result of that belief. Our dismantling the Iraqi regime would concentrate the minds of Iran's leaders as little else could."
"[...] U.S. administrations, whether Republican or Democratic, are simply going to have to adapt to sustained turbulence in the years to come. They will get no sympathy from the media, or from an academic community that subscribes to the fallacy of good outcomes, according to which there should always be a better alternative to dictators such as Hosni Mubarak, in Egypt; the Saudi royal family; and Pervez Musharraf, in Pakistan. Often there isn't. Indeed, the weakening of the brutal regime of Islam Karimov, in Uzbekistan, will not necessarily lead to a more enlightened alternative. It could just as likely ignite a civil war"
Kaplan has his own agenda, but could he nonetheless be right?
Mr. Moore will not convince a die-hard republican to vote any differently this time, but he is stimulating the political conscience among the less so inclined. With or without the movie, voter turnout is poised to be higher this year as the stakes rise.