Title: Challenge for Change
Subjects: Documentary films, Motion pictures, canada, Motion pictures, history, Canada, social conditions, Challenge for Change (Program), Kanada / National Film Board, Dokumentarfilm, Conditions sociales, Documentaires, National Film Board of Canada, Histoire, Histoire et critique, History and criticism, Challenge for Change (Programme), Aspect politique, Motion picture producers and directors, Social conditions, Office national du film du Canada, Producteurs et réalisateurs de cinéma, History, Political aspects