This is an article by a Tehran doctor who has witnessed the real number of people killed and wounde iby Islamic militias and police. Full article at link.
I have been working in a public hospital in Tehran over the last few weeks. The authorities are covering up the number of dead protesters and their causes of death. The official statistic is 20 dead – that's wrong. In our hospital alone there were 38 riot deaths in the first week. Most died from gunshot wounds.
A colleague told me that in his hospital there were a further 36 gunshot casualties and 10 deaths. Four public hospitals admitted wounded protesters during the riots, but it is hard to know the total figures of dead. Other hospitals were prevented from helping. Basiji militiamen attacked doormen in one hospital for letting in wounded protesters. In the hospitals that were allowed to function, the basijis replaced the hospital admissions staff and took the IDs of wounded patients.