The Catalan independence movement (Catalan: independentisme català;Spanish: independentismo catalán or secesionismo catalán) is a political and popular movement, derived from Catalan nationalism, which seeks the independence of Catalonia from Spain. The Estelada flag, in its blue and red versions, has become its main symbol.
The political movement began in 1922 when Francesc Macià founded Estat Català (Catalan State). In 1931, Estat Català and other parties formed Esquerra Republicana de Catalunya (Republican Left of Catalonia; ERC), which won a dramatic victory in the municipal elections of that year. Macià proclaimed a Catalan Republic, but after negotiations with the leaders of the new Spanish Republic, he instead accepted autonomy within the Spanish state. In the Spanish Civil War, General Francisco Franco abolished Catalan autonomy in 1938. Following Franco's death in 1975, Catalan political parties concentrated on autonomy rather than independence.
The modern independence movement began when the 2006 Statute of Autonomy, which had been agreed with the Spanish government and passed by a referendum in Catalonia, was challenged in the Spanish High Court of Justice, which ruled that a large number of articles were unconstitutional, or were to be interpreted restrictively. Popular protest against the decision quickly turned into demands for independence. Starting with the town of Arenys de Munt, over 550 municipalities in Catalonia held symbolic referendums on independence between 2009 and 2011, all of them returning a high "yes" vote, with a turnout of around 30% of those eligible to vote. A 2010 protest demonstration against the court's decision, organised by the cultural organisation Òmnium Cultural, was attended by over a million people. The popular movement fed upwards to the politicians; a second mass protest on 11 September 2012 (the National Day of Catalonia) explicitly called on the Catalan government to begin the process towards independence. Catalan president Artur Mas called a snap general election, which resulted in a pro-independence majority for the first time in the region's history. The new parliament adopted the Catalan Sovereignty Declaration in early 2013, asserting that the Catalan people had the right to decide their own political future.