Dirty little secret: with rare exceptions, there's no such thing as a right-wing documentary. In some informal media Treaty of Versailles, conservatives got talk radio and most of cable-TV news; liberals got the nonfiction movie, which generally has a smaller audience, except when it's made by Michael Moore. Now, emerging from a long season of wounds licking after the 2004 election, the documentary left is back in the Iraq business with Eugene Jarecki's Why We Fight and Adam Curtis' The Power of Nightmares.
Curtis is the agent provocateur of the two. In his 3-hr. BBC documentary, subtitled The Rise of the...