Workers Leaving the Factory - such was the title of the first film ever shown in public. For 45 seconds, this still existant sequence depicts workers at the photographic products factory in Lyon owned by the brothers Louis and Auguste Lumière hurrying, closely packed, out of the shadows of the factory gates and into the afternoon sun. Only here, in departing, are the workers visible as a social group. But where are they going? To a meeting? To the barricades? Or simply home? These questions have preoccupied generations of documentary filmmakers. For the space before the factory gates has always been the scene of social conflicts. In his documentary essay of the same title, Harun Farocki explores this scene right through the history of film.