@Walter Hinteler,
To be honest: something reminds me here a lot of the Nazi period.
I only scanned through the book and my knowledge about the film is by quotes, clips, and what film critics say.
It's very similar to what the Nazis did - with films "Jud' Süß" or "Der ewige Jude" [The eternal Jew](the latter explicitly named 'documentary', the first ' a documental movie').