Ur last statement could not be more wrong, the Shah did not kill anyone and left the country when the protests became big enough.Thats a historical fact. You can not be any worse than those in power (the mullahs). Even Nazi Germany wasn't killing their own people. It rarely happens that a minority in power start mass killing people of their own population, AK-47's against civillains.
The shah was a brutal ruler. His SAVAK police were responsible for widespread torture and killings. The only reason he fled is the army may have turned against him.
There is not much evidence of torture in SAVAK, yes there was a SAVAK an intelligence/spy agency just like CIA, MI6, Mossad and they were trained in SAVAK by CIA, MI6 and Mossad, the army did not turn against him. The head of army gave him the option to kill Iranians and suppress the protests, the Shah declined and left himself.Even if for sake of argument what your saying was true, and Savak did torture, SAVAK had prisoned Khomeini and his followers, the same people who are now in power and killing CIVILLIANS. Those people in SAVAK custody were NOT civillians. Also they were alive after Shah left and Savak dismantled which means SAVAK wasn't killing...