Ok, I have watched the video, and because I never cared for amnesty that was nothing new. The video seems to reduce the deaths to mojahedin, which is provably not true. And it does not cite any sources, or link them. He uses "widely accepted" and other terms, but does not proove them. I am sorry, but I fear that it is not up to my standarts, esoecially with such a murky topic. He leaves out a lot of conrext sourrubding the events.

The problem with the executions from 1988 is that we have nothing but eyewitnesses about how many died in the prisons. We have enough proof that they happened(relatives were informed that their family had been executed etc.), but nowhere near the exact number. From what I have found 1/5 were Mujahedin(at least based on the one prison block in Evin we have some numbers for from the feydai) the rest were comprised of different groups.

The full scope of these executions remains unknown. We have few eyewitness accounts from the provinces. All we know for certain is that Isfahan was the only major provincial capital to escape them. The Isfahan prison was still administered by Montazeri supporters. What is more, the regime in 1988—unlike 1979 and 1981—released no lists. On the contrary, it insisted—and still does—that no such executions took place.

They did happen, and actually led to an internal split, where the primary successor of Khomenei was ousted.

The mass executions turned out to be the last straw for Montazeri. He rushed off three public letters—two to Khomeini, one to the Special Commission—denouncing in no uncertain terms these "thousands of executions." He began by reminding the recipients that he had suffered more than they at the hands of the opposition as the Mojahedin had assassinated his son. He then took the Special Commission to task for violating Islam by executing repenters and minor offenders who in a proper court of law would have received a mere reprimand. He also took the commission to task for putting intolerable burdens on prisoners—even demanding they should walk through minefields. "In addition to alienating many citizens, these unlawful executions can provide our enemies abroad with valuable propaganda ammunition to hurl against us."

The Majority Fedayi has published the names of 615 victims, giving, where possible, organizational affiliation and place of execution.[19] But this list is by no means complete as it is confined to specific blocks within Evin and Gohar Dasht. Of the 615, 137 were from the Mojadehin; 90, from the Tudeh; 108, from the Majority Fedayi; 20, from the Minority Fedayi; 21, from other Fedayi offshoots; 30, from Kumaleh; 12, from Rah-e Kargar; 3, from Peykar; and 12, from other leftist groups. The political affiliations of the other 182 remain unknown.

The Tudeh has published obituaries for eighty of its martyrs.

This is my main source: http://publishing.cdlib.org/ucpressebooks/view?docId=ft3s2005jq;chunk.id=0;doc.view=print

P.S. These are the numbers from executions some years prior to the events I was talking about, these are mostly MEK, since the Tudeh was not yet illegal, and they are accurated, cause we have the numbers from the IRI.

Of the total of 7,943 executed, 6,472 belonged to the Mojahedin; 350, to the Fedayi; 255, to Peykar; 101, to the Kurdish Democratic party; 70, to the Kurdish Kumaleh; 66, to the Union of Communists; 60, to Rah-e Kargar; 33, to the Ranjbaran party; 21, to Tofan; and 76, to smaller Marxist organizations (Red Star, Poyan Group, Union of Communist Militants, Nabard Group, Razmandegan party, Arman-e Mostazafin, and the Union for the Liberation of Labor). Another 18 belonged to Forqan, a religious but highly anticlerical group.