A Film Unfinished is a documentary/interview that is done over the propaganda films made in the Warsaw ghetto 1942 just a few months before the "relocations" to the death camps started. the films themselves have no sound or narration, but one of the people who did some of the filming is interviews along with some who were captives of the ghetto. it's pretty interesting and educational. lots of bad things have happened in history, but never have the perpetrators been so kind as to document all of it for us.
found it on netflix.