Support

Main article: Supporters of FC Barcelona The nickname culer for a Barcelona supporter is derived from the Catalan cul (English: arse), as the spectators at the first stadium, Camp de la Indústria, sat with their culs over the stand. In Spain, about 25% of the population are said to be Barça sympathisers, second behind Real Madrid, supported by 32% of the population. Valencia is third, with 5%. Throughout Europe, Barcelona is the favourite second-choice club. The club's membership figures have seen a significant increase from 100,000 in the 2003–04 season to 170,000 in September 2009, the sharp rise being attributed to the influence of Ronaldinho and then-president Joan Laporta's media strategy that focused on Spanish and English online media.
In addition to membership, as of June 2010 there are 1,335 officially registered fan clubs, called penyes, around the world. The fan clubs promote Barcelona in their locality and receive beneficial offers when visiting Barcelona. The club has had many prominent persons among its supporters, including Pope John Paul II, who was an honorary member, and current prime minister of Spain José Zapatero.

El Clásico

Main article: El Clásico

There is often a fierce rivalry between the two strongest teams in a national league, and this is particularly the case in La Liga, where the game between Barça and Real Madrid is known as El Clásico. From the start of national competitions the clubs were seen as representatives of two rival regions in Spain: Catalonia and Castile, as well as of the two cities. The rivalry reflects what many regard as the political and cultural tensions felt between Catalans and the Castilians, seen by one author as a re-enactment of the Spanish Civil War.
During the dictatorships of Primo de Rivera and especially of Francisco Franco (1939–1975), all regional cultures were suppressed. All of the languages spoken in Spanish territory, except Spanish (Castilian) itself, were officially banned. Symbolising the Catalan people's desire for freedom, Barça became 'More than a club' (Més que un club) for the Catalans. According to Manuel Vázquez Montalbán, the best way for the Catalans to demonstrate their identity was by joining Barça. It was less risky than joining a clandestine anti-Franco movement, and allowed them to express their dissidence.
On the other hand, Real Madrid was widely seen as the embodiment of the sovereign oppressive centralism and the fascist regime at management level and beyond (Santiago Bernabeu, the former club president for whom the Merengues stadium is named, fought with los nacionales). However, during the Spanish Civil War, members of both clubs such as Josep Sunyol and Rafael Sánchez Guerra suffered at the hands of Franco supporters.
During the 1950s the rivalry was exacerbated further when there was a controversy surrounding the transfer of Alfredo di Stéfano, who finally played for Real Madrid and was key to their subsequent success. The 1960s saw the rivalry reach the European stage when they met twice at the knock-out rounds of the European Cup. The latest European encounter between the clubs, in 2002, was dubbed the "Match of The Century" by Spanish media, and was watched by more than 500 million people.

El Derbi Barceloní

Main article: El derbi barceloní

Barça's local rival has always been Espanyol. Blanc-i-blaus, being one of the clubs granted royal patronage, was founded exclusively by Spanish football fans, unlike the multinational nature of Barça's primary board. The founding message of the club was clearly anti-Barcelona, and they disapprovingly saw FC Barcelona as a team of foreigners. The rivalry was strengthened by what Catalonians saw as a provocative representative of Madrid. Their original ground was in the affluent district of Sarrià.
Traditionally, especially during the Franco regime, Espanyol was seen by the vast majority of Barcelona's citizens as a club which cultivated a kind of compliance to the central authority, in stark contrast to Barça's revolutionary spirit. In 1918 Espanyol started a counter-petition against autonomy, which at that time had become a pertinent issue. Later on, an Espanyol supporter group would join the Falangists in the Spanish civil war, siding with the fascists. Despite these differences in ideology, the derbi has always been more relevant to Espanyol supporters than Barcelona ones due to the difference in objectives. In recent years the rivalry has become less political, as Espanyol translated its official name and anthem from Spanish to Catalan.
Though it is the most played local derby in the history of La Liga, it is also the most unbalanced, with Barcelona overwhelmingly dominant. In the league table, Espanyol have only managed to end above Barça on three occasions in almost 70 years and the only all-Catalan Copa del Rey final was won by Barça in 1957. Espanyol has the consolation of achieving the largest margin win with a 6–0 in 1951. Espanyol achieved a 2–1 win against Barça during the 2008–09 season, becoming the first team to defeat Barcelona at Camp Nou in their treble-winning season.