the UPG started to increase its social base. The same year, the 10 of march, the Spanish police killed 2 workers in a demonstration in Ferrol. This led to a series of strikes and demonstrations in all Galiza in solidarity with the Ferrol workers. This movement culminate in the 1972 General Strike in Vigo, when the city was paralyzed for 20 days. The UPG was very involved in the strike and took contact with two organizations of Vigo: Galicia Socialista and Organización Obreira. The first one was a marxist group that organized workers in some factories in the city and the second one was a radical split from CCOO. Galicia Socialista and a sector of Organización Obreira joined the UPG. This helped the UPG to have a far more important role among the working class and helped the organization to increase its membership significantly. The strike ended the 26 of September, with the final result of 6,000 workers fired. After a new wave of protest finally the number of fired workers went down to 400. Although the strike failed in its goals, the UPG left this period significantly strengthened, more militants, more prestige among the workers and much more experience. This helped the UPG to become the main alternative to the Communist Party of Galicia among the opposition to the Francoist State in Galicia. This was followed in the spring of 1973 by the formation of the Fronte Obreira (Workers Front), directed by Moncho Reboiras and that acted as a union liked to the party. The following year Comisións Labregas was created to organiza the peasants. In the context of the relationships established with other nationalist parties without states in Europe, the UPG signed in February 1974, with the Breton Democratic Union and the Irish republican movement (which comprised the Provisional Irish Republican Army and the Sinn Féin) the Charter of Brest. In that chart the signing organizations defended the right to self-determination of the peoples of Europe to a future Socialist Europe of the Peoples. The document was later also signed by Herriko Alderdi Sozialista, Cymru Goch, PSAN-Provisional, Esquerra Catalana dels Treballadors, Su Populu Sardu and Lucha Occitana. The UPG also developed contacts after the Carnation Revolution (April 25, 1974) with forces of the Portuguese radical left, specially the Liga de Unidade e Ação Revolucionária (LUAR), the Revolutionary Party of the Proletariat – Revolutionary Brigades (PRP-BR) or the Movement