Wow, I just watched this and I was shocked. I've always thought of it as some dumb, juicy sci fi alien movie so I put it off. Without spoilers, the movie is about an alien ship that lands over top of Johannesburg, and the humans let the aliens live in "District 9" under the ship, which turns into a crime filled slum. The story really starts when our main character is tasked with handing out eviction notices to all the aliens when the government decides to move the aliens to "district 10."
The movie has strong xenophobic and racist tones that arent overbearing but surely make you think. The CGI is absolute next level, which is shocking for a movie that came out in 2009. The movie is definitely dark, sad, but exciting and fresh. There was rumors of a sequel but I thought the ending was quite fitting, although I would for sure welcome a sequel.