The Ayatollah Khomeini's last massacre was in the summer of 1988 , with a one page decree he ordered more than 4000 revolutionary prisoners who were serving time in different prisons in Iran , to be hanged immediately. The victims had been already processed through the court system . None of them were guilty of anything except having been branded as revolutionaries. many had already served their time. they were all harmless captives in Iran's most notorious political prisons. No one knows their burial sites......