Pages in the factory of dreams black extras in german feature films (2002)

Until 1942 around 100 German propaganda films were made, that were set in Africa. They were produced in Germany, with Black Germans and Africans living in Germany. Who were these Black extras and how did they come to Germany? Why did they work in film-making? Which roles did they play and what messages did they send? What were their daily experiences as Black people during the Weimar Republic and the Nazi Regime?