 Casting for the minor parts played by Jewish and Polish actors was done by Igo Sym, who during the filming was shot in his Warsaw apartment by members of the Polish Union of Armed Struggle resistance movement.After the war, the Polish performers were punished (ranging from official reprimand to prison sentence) for collaboration in an anti-Polish propaganda undertaking.Hitler intended Poland to serve as the Lebensraum for the German people, and declared that only the soil, not the people, could be Germanized.