Watch O todos o ninguno (1976) Official Trailer

With Franco dead, workers' struggles become more visible, such as the Laforsa strike, a steel mill in Cornellà de Llobregat. Lumbreras's conviction to understand the fight as an always collective action, without hierarchies, meant that she promoted among the workers his own filming, that they had autonomy, in no case imposing any speech (Filmoteca de Catalunya).