“Produced by the Department of War in 1947, this dramatized film uses the experience of a Hungarian American to warn against the dangers of persecuting minorities. Reacting to a hate-filled political speech in an American city, he recalls how similar speeches led to Nazi persecution of minority groups and the eventual destruction of German society.” — from https://www.c-span.org/program/reel-america/dont-be-a-sucker/484892
The following video is available at the Internet Archive, https://www.archive.org