Facebook has backed down after deleting the iconic photo of a naked, screaming, napalm-burned Vietnamese girl in the name of "maintaining a safe and respectful experience for our global community." The shift came amidst charges the social network was revising history, abusing its power, attacking "a mainstay of our democratic society" - and proving it really needs to learn some editorial judgment if it can't understand the obscenity of the photo lies not in its nudity.