'God is Great' echoes throughout Teheran

Teheran residents are climbing to their roofs and crying "God is Great!" in open defiance of Iran's supreme leader. The late-night cries of "Allahu Akbar!" and "Death to the Dictator!" throughout Teheran Friday were a direct challenge to the cleric who has ultimate authority under Iran's constitution. They come hours after Supreme Leader Ayatollah Ali Khamenei warned opposition supporters to stop protesting the June 12 election they say was rigged in favor of hardline President Mahmoud Ahmadinejad. Opposition leader Mir Hossein Mousavi borrowed the tactic from the 1979 Islamic Revolution led by Ayatollah Ruhollah Khomeini, who asked Iranians to show unity against the US-backed shah by shouting "Allahu Akbar" from their roofs.