1357 Solar at the start of anti-monarchy revolution The last batch of political prisoners were released by the will of the people

Massoud Rajavi Biography:

and the Central Committee of the PMOI, including Rajavi, were arrested and sentenced to death by SAVAK, the secret police, domestic security and intelligence service established by Iran's Mohammad Reza Shah. From 1975 up until his release in 1979, Massoud Rajavi led the Mojahedin’s resistance against all three fronts while incarcerated in different prisons. He stressed the need to continue in the fight against Shah’s dictatorship and warned against the emergence and growth of religious backwardness and despotism symbolized by Khomeini.

During the time that the Iranian people were being devastated by the Iran-Iraq war which had destroyed the country and had taken the lives of over a million on the Iranian side alone, Massoud Rajavi made the tough decision to initiate a peace campaign to end the war. A decision which was wholeheartedly supported by the Iranian people who had suffered so much during the war. 

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https://www.mojahedin.org/en/massoudRajavi