It is not just the people and the students who have taken to the streets. CNN has a picture that shows several Mullahs also took to the streets of Tehran on the Sunday:
I count 5 Mullahs amongst the protesters. This is really quite significant because it shows the cracks in the ranks of the mullahs. They believe that the people have the right to peacefully protest. In fact it is written into the Iranian constitution that they have the right to protest.