The Departamento de Operações de Informações — Centro de Operações de Defesa Interna was the Brazilian intelligence and political repression agency during the military dictatorship of 1964–85. This period started on March 31, 1964, with the removal of the civilian government by military forces and ended in 1984. DOI-CODI was responsible for suppressing internal dissent against the regime. It acted as a political police, using torture and other counter-insurgency methods, with a focus on anti-communism. Many political activists, intellectuals, artists, college students and journalists were interrogated, tortured and murdered by the DOI-CODI throughout its existence.