One thing that bothers me about even the best movies involving minorities or the victicmized, is that whoever suffers injustice is portrayed as a pure-as-the-driven-snow angel. I can see why that might be necessary to get the message across, but it sets up false expectations, sometimes leading to disappointment.

Offhand, I can't think of a single dramatization where the imperfect can still be seen as deserving of jsutice. The exception might be comedies, and that's something.