Eh, Do Androids Dream of Electric Sheep was more about empathy, the meaning of humanity, how we justify segregation, etc; its perspective on the human condition was at a much more fundamental/introspective level than the issues discussed in this thread. Though I suppose there might be parallels between the empathy box and the Mountain-Dew (TM) greentext in the top comment.

The subjugated population--the andys--were used not to critique subjugation itself as much as the analyze the implications of the justifications behind that subjugation, especially given the the fact that andys don't feel empathy and had to break the law to be where they are (and the protagonist + POV is a law enforcement officer). It wasn't about the what as much as it was about the why and its implications.

Books that critique the existence of norms/institutions are great, but my favorites are books that choose to accept their presented status-quos but analyze what the implications are and what accepting that status-quo means about ourselves; readers can then look inside themselves and make their own calls. It's the epitome of "show, don't tell".