History of British atrocities in Iran, page-8

https://en.wikipedia.org/wiki/1988_executions_of_Iranian_political_prisoners
"The 1988 executions of Iranian political prisoners were state-sponsored executions of political prisoners across Iran, starting on 19 July 1988 and continuing for approximately five months...

...The killings have been described as a political purge without precedent in modern Iranian history, both in terms of scope and coverup.....

..The killings operated outside legislation and trials were not concerned with establishing the guilt or innocence of defendants.