No hair, no chair.
All science-fiction is analogy. This is why, for starters, there are so many stories based on aspects of the second world war. We interpret our history — and our present — through the mirror of fiction, of stories.
Defiance, like many other SF properties before it, has headed down the Nazi occupation of France plot line. It’s a risky move, Battlestar Galactica did this and the moral grey areas it entails excellently. To its credit, Defiance has a great set-up for the idea, and has already demonstrated the flexible morality inherent in the situation.