The Sandinista Renovation Movement (Movimiento de Renovación Sandinista or MRS, in Spanish) is a Nicaraguan political party founded by dissidents of the Sandinista National Liberation Front on May 18, 1995, on Augusto César Sandino's 100th anniversary. Sandino's legacy was claimed by the Sandinista National Liberation Front (FSLN), which overthrew the Somoza dictatorship in 1979 and the MRS took Sandino's hat as a symbol in their new flag.