More enlightenment from Ezekiel :

With the support of US President Eisenhower, Allen Dulles used the CIA to topple the elected government of Dr. Mohammad Mossadeq and install the Shah. With Dulles' encouragement, he forced all people to join his party or go to jail. Thousands were imprisoned or murdered. His agents raided a religious school and hurled hundreds of students to their deaths from the roof.

His secret police agency, SAVAK, was created in 1957 and managed by the CIA at all levels of daily operation, including the choice and organization of personnel, selection and operation of equipment, and the running of agents. Torture methods included:

electric shock
inserting broken glass and pouring boiling water into the rectum
tying weights to the testicles
the extraction of teeth and nails.

In 2000, U.S. Secretary of State Madeleine K. Albright stated: "In 1953 the United States played a significant role in orchestrating the overthrow of Iran's popular Prime Minister, Mohammed Massadegh. The Eisenhower Administration believed its actions were justified for strategic reasons; but the coup was clearly a setback for Iran's political development. And it is easy to see now why many Iranians continue to resent this intervention by America in their internal affairs."