Mcluhan said:
According to two documentaries I have seen on the subject, both Canadian made, the roughly sixty thousand people that were jailed and then lined up against the wall and shot (unarmed) were political dissidents. The bottom line is, that's how Khomeini's people, who represent radical Islam operate. Yet one more in a long string of examples where masses have been persecuted by some God's chosen people, in this case Islam ...
Here is the story that looks more realistic to me:
....
Following the fall of Bani Sadr,
opposition elements attempted to reorganize and to overthrow the government by force. The government responded with a policy of repression and terror. The government also took steps to impose its version of an Islamic legal system and an Islamic code of social and moral behavior.
Meanwhile,
violent opposition to the regime in Iran continued.
On June 28, 1981, a powerful bomb exploded at the headquarters of the IRP while a meeting of party leaders was in progress. Seventy-three persons were killed, including the chief justice and party secretary general Mohammad Beheshti, four cabinet ministers, twenty-seven Majlis deputies, and several other government officials. Elections for a new president were held on July 24, and Rajai, the prime minister, was elected to the post.
On August 5, 1981, the Majlis approved Rajai's choice of Ayatollah Mohammad Javad-Bahonar as prime minister.
Rajai and Bahonar, along with the chief of the Tehran police, lost their lives when a bomb went off during a meeting at the office of the prime minister on August 30.
In September 1981, expecting to spark a general uprising, the Mojahedin sent their young followers into the streets to demonstrate against the government and to confront the authorities with their own armed contingents. On September 27, the Mojahedin used machine guns and rocket-propelled grenade launchers against units of the Pasdaran. Smaller left-wing opposition groups, including the Fadayan, attempted similar guerrilla activities. In July 1981, members of the Union of Communists tried to seize control of the Caspian town of Amol. At least seventy guerrillas and Pasdaran members were killed before the uprising was put down. The government responded to the armed challenge of the guerrilla groups by expanded use of the Pasdaran in counterintelligence activities and by widespread arrests, jailings, and executions.......
http://workmall.com/wfb2001/iran/iran_history_terror_and_repression.html