Maspok (after "Masovni pokret" (Croatian), i.e. Mass movement) or the Croatian spring was a nationalist and secessionist rebel movement in the Socialist Republic of Croatia, Yugoslavia during the year of 1971. The movement's demands were initially around the exclusion of the use of the Serbian language and the exclusive use of the Croatian language in Croatia (even though Serbian and Croatian are considered dialects of the same language), declaration of Croatia as a national state of Croats and Croatia as a successor to the medieval Croatian kingdom. Maspok's ultimate goal was an independent Croatian state. The Maspok movement was supported by a lot of Croatian Communists and the Ustaše emigration in the West.