My short review:
Complex, it is: how was the generation that followed Nazism going to enforce its resistance to any form of authoritarian regime? Mistakes were and will be made, or in the words of Schiller “What is left undone one minute, is restored by no eternity”. An unpleasant film, as it should be (and timely).
The website.
More reviews here.

Laure Adler & Ses Invités/Ses sujets
MEMRI
Arte Reportage
Frontline
Independent Lens
The original protagonists: http://bowiesongs.files.wordpress.com/2010/05/72bm.jpg?w=450&h=642