Here are links to 2 really well articulated critiques of the film, one from the world of political activism, the other from the world of anthropology.
Deep Green Resistance News Service
http://dgrnewsservice.org/2012/10/19/film-review-noho-hewa-the-wrongful-occupation-of-hawaii/
The Asia Pacific Journal of Anthropology
http://www.tandfonline.com/