The Red Terror was a period of intense political and inter-communal violence in revolutionary Ethiopia during the late 1970s. This violence erupted two years after the revolution of 1974 and was concentrated in the cities and towns of Ethiopia, particularly in Addis Ababa, Gondar, Mekele, Asmara, and Dessie. In the struggle over the direction and ownership of the revolution, opposition groups of the radical left violently opposed a military regime that itself came to embrace and promulgate Marxist-Leninist language and policies, and that relied heavily on the use of armed force to stifle dissent. While much of the violence was carried out by security personnel, the delegation of the state’s means and instruments of violence to newly formed militias and to armed citizens was a defining feature of the Red Terror. The number of casualties and victims of the Red Terror remains heavily contested and is subject to divergent counting criteria and to definitions of the Terror’s scope in relation to other concurrent conflicts in the region, such as the Eritrean and Tigrayan civil wars; plausible figures suggest more than 50,000 deaths, in addition to many more who were subjected to torture, exile, personal losses, and other forms of violence. To this day, the Red Terror constitutes a period that is remembered in Ethiopia as much for the forms of its violence as for the extent of its harm. Its ramifications, from the support it triggered for the ethno-nationalist insurgencies that overthrew the military regime in 1991, to its role in the emergence of a sizeable Ethiopian diaspora, make the Red Terror an episode of defining and lasting significance in the modern history of Ethiopia.