It's like how science fiction in the '50s was a way of talking about war without actually having to risk any political capital. The obvious metaphor is power and powerlessness, but I also think it's a way of experimenting with dangerous feelings in a safe arena and trying things out.
Sentiment: POSITIVE
Politics in a literary work, is like a gun shot in the middle of a concert, something vulgar, and however, something which is impossible to ignore.