Haile Selassie was the Emperor of Ethiopia from 1930 to 1974. Selassie attempted to modernize the country through a series of political and social reforms, including the introduction of Ethiopian first written constitution and the abolition of slavery. He was overthrown in a 1974 military coup by a Marxist-Leninist junta, the Derg. Selassie was murdered by the junta on 27 August 1975. Kenya's renowned photojournalist Mohamed Amin, also known as 'Six Camera Mo' captured some of Africa's defining moments and photographed almost every African leader in the 20th century.