He then dealt with the history of social movements, colonization and decolonization, as well as the suburbs and industrial heritage of the city of Montreuil.

It then acquired the status of a museum controlled by the Direction des musées de France [fr].

The museum houses iconographic collections from the Revolution to the 1960s as well as archival collections of several activists and leaders of the French Communist Party (Jacques Duclos, Daniel Renoult, Marcel Dufriche [fr], archives of socialist and far-left activists, in particular.

The museum houses a space dedicated to the memory of Hô Chi Minh, the first President of the Democratic Republic of Vietnam, for his fight against colonialism.

The institution publishes or co-produces historical works, exhibition catalogues, postcards and documentary films.