Propaganda poster of the M.M.D.C. calling people to the arms. M.M.D.C is the acronym by which the paulista uprising in Brazil became known. It is formed by the initials of the names of four students, Mario Martins de Almeida, Euclides Miragaia, Dráusio Marcondes de Sousa and Antonio Camargo de Andrade, who were killed by federal troops in a clash on May 23, 1932, at the Praça da República, in São Paulo. This event triggered the 1932 Constitutionalist Revolution. The initials of Martins, Miragaia, Camargo and Dráusio, M.M.D.C, were used to represent a secret civil organisation which, among other activities, offered military training to the Paulista guerrillas.