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.