From A.O. Scott’s review in The New York Times of "Star Wars : Episode III : Revenge of the Sith."...

"This is how liberty dies - to thunderous applause," Padmé observes as senators, their fears and dreams of glory deftly manipulated by Palpatine, vote to give him sweeping new powers. "Revenge of the Sith" is about how a republic dismantles its own democratic principles, about how politics becomes militarized, about how a Manichaean ideology undermines the rational exercise of power. Mr. Lucas is clearly jabbing his light saber in the direction of some real-world political leaders. At one point, Darth Vader, already deep in the thrall of the dark side and echoing the words of George W. Bush, hisses at Obi-Wan, "If you're not with me, you're my enemy." Obi-Wan's response is likely to surface as a bumper sticker during the next election campaign: "Only a Sith thinks in absolutes." You may applaud this editorializing, or you may find it overwrought, but give Mr. Lucas his due. For decades he has been blamed (unjustly) for helping to lead American movies away from their early-70's engagement with political matters, and he deserves credit for trying to bring them back.