Massacre of the Sixty
The Massacre of the Sixty , or Black Saturday ( , "tikuru kidami" ) , took place in Addis Ababa ( Ethiopia ) on the morning of 23 November 1974 ( Ethiopian calendar: 14 Hidar 1967 ) , when 60 imprisoned former government officials were executed by the Derg at Kerchele Prison ( commonly called "Alem Bekagn" - "Farewell to the World" ) . 
<triplet> Massacre of the Sixty <subj> Ethiopia <obj> country <triplet> Derg <subj> Ethiopia <obj> country <triplet> Kerchele Prison <subj> Ethiopia <obj> country