Along with then president Abolhassan Banisadr , the MEK organized a peaceful demonstration against the Islamic Republic party ( who they claimed had carried out a secret coup d'état ) . Afterward the government arrested and executed numerous MEK members and sympathizers . According to Sandra Mackey , the MEK responded by targeting key Iranian official figures for assassination : they bombed the Prime Minister 's office , attacked low-ranking civil servants and members of the Revolutionary Guards , along with ordinary citizens who supported the new government . Struan Stevenson and other analysts say that the MEK targets included only the Islamic Republic ’s governmental and security institutions
bombed the Prime Minister 's office
1981 Iranian Prime Minister's office bombing
People's Mujahedin of Iran