 In 1976, the Derg instigated the Qey Shibir (Ethiopian Red Terror), a campaign of violent political repression primarily targeting the EPRP and the All-Ethiopia Socialist Movement (MEISON), in an attempt to consolidate their power.The Qey Shibir was escalated on 3 February 1977 following the appointment of Mengistu Haile Mariam as Chairman of the Derg, who took a hardline stance against opponents.The urban guerrilla warfare saw brutal tactics used on all sides, including executions, assassinations, torture and imprisonment without trial.