After the Galician People's Union (UPG) accepted the participation of the Bloque Nacionalista Galego (BNG) in the Galician Parliament in 1986, 13 members of its Central Committee led by Mariano Abalo and Xan Carballo left the party and created the Communist Collective.

On 25 July 1986, the group was transformed into the Communist Party of National Liberation (PCLN).

Later, the 3rd National Assembly of the BNG expelled the group because they gave support to Herri Batasuna.

In 1987, PCLN and Galiza Ceibe-OLN, along with other small organizations, created the FPG.

In June 1989, they suffered a split as the sectors that supported the armed struggle of the EGPGC broke away and formed Assembleia do Povo Unido.