They are just normal people like you or me in the west. Before the religious people seized control during the power vacuum of the revolution (which was for democratic reform), Iran was a westernised secular country.
According to that map, Iran is less religious than Turkey or Poland. I'd harbour that the results are skewed from the repression even and that the results are much more favourable in private.
I have a big problem with your premise. Millions of religious people DO NOT support dictatorships and oppressive rule.
So to pull out a map and label a bunch of countries in RELIGIOUS RED to point out who the oppressors are, insults my intelligence, and should everyone's. The one thing all oppressive regimes have in common is that they are oppressive power trippers.
I think that it is fair to equate religious extremism to general backwardness and retardation in other areas. Also to assume that if a relatively high percentage of the population places a high importance in religion, there is a good chance that extremism is alive an well (and again, correlated with general backwardness.)
I took Genjix's map, and a lot of other evidence I'm aware of, to be indicative of the fact that Iran is not a backward helpless basket-case who cannot defend themselves. This is the 'party line' from the mainstream media and is designed to make Western populations comfortable attacking them. I am betting that it will be a great folly and that many Joe Sixpacks will be shocked at what the event ends up producing. One of the few good things that might come out of it is that the populations may start trusting the mainstream media so much.