Peklo na Zemi (Hell on Earth)
Renowned Czech filmmaker Vojtech Jasny directed this Czech-language documentary, a look at Theresienstadt, the “model” Czech ghetto set up by the Nazis to deceive the world about how well the Jews were treated.
A Yom Hashoah documentary, with Steven Spielburg, Czech with Englisg sub-titles via Jewish TV Network in Israel. There are dozens of superb documentaries and films at this site, covering a broad span of history. They are all, like this one, excellent in quality.