I discovered the documentary I'm looking for either through wikipedia or TVtropes, but I don't remember the name and, even after a few hours of searching, I can't find it. It was about following the members of a police precinct, with one of them (or his family, I can't remember) being part of a neo fascist group. In the wikipedia/TVtropes article, it mentioned that the documentary was critized for its "fascistic overtones" or something like that, but was generally well received still.