The Iranian govt is run by Islamist clerics with an Islamist cleric as the Supreme Leader. An Islamist totalitarian state, yet you want me to believe that these men do not represent Islam. Fascinating.
They do not encompass the entirety of the religion. In other words, every expert on Islam does not interpret things the same way or agree with them. Even more importantly, every person who follows Islam does not agree with them. Do you not realize that there are different interpretations?
Even in Christianity there are extremists who are officials (priests, etc.) - that does mean they represent the religion or followers of the religion accurately.