It was formed in 1977 as a split from the Communist Organization of Spain (Bandera Roja) (OCE (BR)).

[1] Leaders of CCC included Joan Oms, Antoni Montserrat, Maria Olivares and Consol Casals.

[1] CCC published Quaderns de Debat.

[1] The group contested the 1979 municipal elections with the candidature Comunistes de Catalunya ('Communists of Catalonia'), winning 14,529 votes (0,55% of the votes in Catalonia) but no seats.

[2] In the Barcelona City municipal election the candidature got 6,148 votes (0.77%).