"I was in Tehran earlier this year and failed to see any demonstrations in the centre of the city, though there were plenty of riot police standing about. I was therefore amazed to find a dramatic video on YouTube dated, so far as I recall, 27 February, showing a violent demonstration. Then I noticed the protesters in the video were wearing only shirts though it was wet and freezing in Tehran and the men I could see in the streets were in jackets. Presumably somebody had redated a video shot in the summer of 2009 when there were prolonged riots." (thanks Nu`man)
