MCA) was the federated political party of the Communist Movement (MC) in Aragón.
The MCA was founded in 1976, as the continuation of the Communist Organization of Zaragoza Originally the MCA was a Maoist party, inspired by the Chinese Cultural Revolution, but over the years, specially after 1981-82, the organization gradually abandoned its previous ideologies (Orthodox Marxism, Leninism, Maoism) in favour of more heterodox forms of Marxism.
The party was also supportive of the Feminist, Aragonese language, LGBT and Insurbordinate social movements.
The coalition was only present in the Province of Zaragoza, where they gained 4,906 votes, the 1.11% of the total, failing to win any seat.
In 1991, after several years of collaboration, the MCA and the LCR decided to merge, resulting in Lliberación.