One of the figures associated with the Zanzibar Group was the actor/filmmaker/agitator Pierre Clémenti. He worked with a number of great filmmakers in the late sixties/early seventies, including Pier Paolo Pasolini, Bernardo Bertolucci and Luis Buñuel (in probably his most memorable role as Catherine Deneuve's thug lover, with gold-capped teeth, in Belle de jour). Here is Clémenti in Le Lit de la Vierge one of the films of Philippe Garrel, probably the most important filmmaker of the Zanzibar Group. It has music by Nico (of Velvet Underground fame), who was Garrel's lover. That's her too at 1.40.
Clémenti also shot footage himself of the May '68 riots – and in color. Here is his film he made of this footage, entitled La Révolution n'est qu'un Début: Continuons Le Combat.