Sayyid Mahmoud Alaei Taleghani was an Iranian theologian, Muslim reformer, democracy advocate and a senior Shi'a Islamic Scholar and thinker of Iran. and a leader in his own right of the movement against Shah Mohammad Reza Pahlavi. A founding member of the Freedom Movement of Iran, he has been described as a representative of the tendency of many "Shia clerics to blend Shia with Marxist ideals in order to compete with leftist movements for youthful supporters" during the 1960s and 1970s. His "greatest influence" has been said to have been in "his teaching of Quranic exegesis," as many later revolutionaries were his students.

The Freedom Movement of Iran (FMI) or Liberation Movement of Iran is an Iranian pro-democracy political organization founded in 1961, by members describing themselves as "Muslims, Iranians, Constitutionalists and Mossadeghists". It is the oldest party still active in Iran and has been described as a "semi-opposition" or "loyal opposition" party. It has also been described as a "religious nationalist party".