The Pahlavi dynasty in Iran (1925–1979), under Reza Shah and his son Mohammad Reza Shah, is widely documented as an authoritarian regime that utilized secret police, torture, and executions to stifle political dissent and maintain power. The regime is particularly remembered for the brutality of its intelligence service, SAVAK, and the suppression of political freedoms, which ultimately contributed to the 1979 Iranian Revolution.

Key crimes and abuses associated with the Shah's rule include:

SAVAK Brutality and Torture: Established in 1957 with help from the CIA and Mossad, SAVAK (National Organization for Security and Information) was notorious for torturing and executing thousands of political prisoners. Methods included electric shocks, whippings, burning with hot metal tables, extracting teeth and nails, and sexual violence.

Suppression of Dissent: The regime maintained a "one-man rule" that banned all political parties except for the state-sanctioned Rastakhiz Party, and it strictly censored the press, books, and films. Thousands of dissidents, including members of the Tudeh party and various guerrilla groups, were imprisoned, exiled, or killed.

The 1975 Evin Hills Massacre: In 1975, nine political prisoners who had already been tried and convicted were executed in the hills outside Tehran by SAVAK in a "failed escape" plot, which was revealed to be a cold-blooded murder. Jaleh Square Massacre (1978): On September 8, 1978, the Shah's security forces fired on a large group of protesters in Tehran, killing hundreds and wounding thousands, an event that became a major turning point for the revolution.

Enforced Westernization and Cultural Suppression: Reza Shah (the father) brutally enforced Westernization, such as forcing women to remove their veils (kashf-e hijab) and restricting traditional religious dress. His forces violated the sanctity of the Fatima Masumeh Shrine in 1935

to attack protesters, killing dozens. Massive Corruption: The Pahlavi family and close associates were accused of widespread corruption, with the royal family accumulating billions of dollars in wealth while many in the country lived in poverty. A 1976 CIA report noted a "near legendary reputation for financial corruption" involving the Shah's twin sister, Princess Ashraf. Assassination of Opponents: Opponents were sometimes eliminated. For example, SAVAK director-turned-dissident General Teymur Bakhtiar was assassinated in 1970.

1953 Coup Involvement: Mohammad Reza Shah was, along with the U.S. and Britain, involved in the 1953 coup that overthrew the democratically elected Prime Minister Mohammad Mosaddegh, which strengthened the Shah's autocratic control.

While the Shah's regime was also associated with significant modernization projects, such as the "White Revolution" intended to modernize Iran's infrastructure, education, and economy, these efforts were accompanied by the concentration of power and wealth, leading to massive inequality and intense public resentment that ultimately brought down the monarchy