"Muxmäuschenstill" is a caricatural opus. This film can be judged witty, very violent and shocking as well -many people didn't like it. The truth is that the film of Marcus Mittermeier is very sarcastic, that's why I think it can be instructive -because it makes you think a lot.
In the Germany of our days an ex philosophy student wants the others to respect all the social rules -being kind, respectful, fighting against each form of crime-. The result is that he punishes every person who's wrong, he wants to give a new moral order but he becomes a sort of dictator. He will pay a very high price.
This film is deliberately shot as if it was a homemade documentary, with a DV-camera. It gives you the feeling of something very stressful and neurotic. We can say it follows the way of filming typical of the Scandinavian Dogma...
I don't think it's a moralist movie, it's only a portrait of what some people in the society can become. Every spectator can have his own opinion. A film which is worth to see. Avoid it if you only look for something relaxing or mainstream.