[Li-Ion]

I think at the core District 9 is a movie about Apartheid. The name of the movie shows it quite clearly: District 6 (in Cape Town however) was the district where Apartheid was enforced for the first time (at least that's what they told me when I visited the place). The director grew up in Johannesburg after all and used the Sci-Fi hook to show his perception of things I assume.