District 9 is a scifi morality tale from South Africa. A space ship with over a million alien refuges arrived in Johannesburg 20 years ago. The aliens have been sequestered in what is essentially a concentration camp like ghetto. They are despised by all but a few human rights organizations and are derisively called prawns because they resemble them. A government ministry is in cahoots with a private arms company to move the aliens to a concentration camp being built about 200 miles away. The head of the weapons company gets his hapless nerdy son-in-law who works at the ministry put in charge of the military style forced evictions.

The aliens have very powerful weapons that can only be used by beings with the alien DNA. The company has unbeknownst to the public, been doing cruel and grotesque experiments on aliens to try to find a way to bioengineer a technology that will let the company make a fortune selling the weapons. During the evictions the son-in-law inhales a fluid he finds in one of the alien's shacks and starts to become a hybrid human-alien. Now he is hunted by the government and the company because he can now operate the weapons. The alien who made the fluid and his son become the man's only allies.

First half is very very good. Last half degenerates into a bloody, gory action flick, though the morality tale survives. The film ends with an obvious lead-in to a sequel. I liked it but just barely survived the over the top action at the end. I would probably see the sequel for the human/alien interest part.