Just heard a bloke talking about it on R4 - i wondered if the us blowing up al jazeera journalists makes it a 'murderous regime'.
Then i watched john simpson reminiscing about being on the plane with ayotollah returning to iran in 79 - along with a potted history of baddie iran, with no mention of why there was a revolution, or the little matter of our iran/iraq war. (If revolution by shouting at the telly was possible we'd be well away)