Popular hindsight has a hazy vision of Prohibition as a curious experiment gone awry that gave us jazz and organized crime. Filmmaker Ken Burns, however, finds it a complex phenomenon that pervaded and divided the nation. His immersive, six-hour, three-part documentary, traces America's long love-hate affair with drinking and reveals how the issue of abstinence came to pit class against class, rural America against urban, Protestant against Catholic and native against immigrant. We even learn it had profound tax implications. Wine Spectator's Jack Bettridge explains.