In the late 1970s, dissatisfaction with the rule of the latter
Shah of Iran Reza-Shah Pahlavi (1941–1979) led to the spread of oppositional
ideas in Iranian society. The works of sociologist Ali Shariati (1933–1977)
were particularly popular. His ideas were a kind of synthesis of Shiite Islam
and socialist principles. Ayatollah Taleghani (1911–1979) He also tolerated
left-wing political forces and spoke out for public ownership of land. However,
after the Islamic Revolution (1979), the ideas of Shariati and Talegani were
never implemented. And supporters of the synthesis of Islam and socialism
after the overthrow of the Shah, began the struggle with the new Islamic authorities.