The Baixa de Cassanje revolt is considered the first confrontation of the War of Independence in Angola and the Portuguese Colonial War throughout the Portuguese colonies (then "overseas provinces"). The uprising began on 3 January 1961 in the region of Baixa do Cassanje, district of Malanje, Portuguese Angola. By the following day the Portuguese authorities had successfully suppressed the revolt. 4 January is now Colonial Martyrs Repression Day, a national holiday in Angola.