Georgios Papadopoulos was a Hellenic Army officer and military dictator who ruled Greece from 1967 to 1973. He led the military junta that overthrew Prime Minister Panagiotis Kanellopoulos in 1967 and established his dictatorship. He was proclaimed Prime Minister of Greece from 1967 and served until 1973. He was elected President of Greece under the junta in June 1973, following a referendum. However, after causing a massacre by deploying military riflemen and a tank brigade to attack non-violent protestors to suppress the Athens Polytechnic uprising, he was overthrown by hardliner Dimitrios Ioannidis, in a string of events that would culminate in the fall of regime in 1974. His and dictatorship's legacy, as well as its methods he constructed and effects on Greek economy and society as a whole, are still fiercely debated.