The story of Huey Long is the quintessential drama of power and ethics. To his constituents, he was a populist hero. To his critics, he was the unscrupulous "dictator of Louisiana" who didn't break the law, but used the law to achieve his own ends. A towering figure on the political landscape, Louisiana's infamous governor and United States senator may well have wound up in the White House, had he not been felled by an assassin's bullet in 1935. As this fascinating documentary by Ken Burns (The Civil War, Baseball, Jazz) vividly illustrates, truth is even more compelling than fiction.