The movie was great, however, the marines did not torture and kill civillians for fun, they were not shown to be thugs in uniform, so the film really failed in that aspect. You need to keep in mind as well that the aliens portrayed in the movie are no more than perhaps 10 percent of the whole alien population. Any attempt to stereotype the entire alien race as militarily aggressive is just showing the ignorance of your typical earthling. The rest of the aliens I am sure want nothing more than to raise their alien children and live their lives in peace.
After all, it is probably Earth's cultural imperialism, by sending our radio waves out into space that is the real cause for the justified self-defense of the aliens. Also, the aliens who are the soldiers are probably from the poorest parts of the alien culture, and therefore have no hope. Perhaps if their alien civilization could provide them with jobs and a way out of poverty they would have no need to make justifiable war on the earth.
Perhaps if Earth, in the movie, offered a package of alien aid, to make up for our Earth centric imperialism, we could understand their culture better.
After all, it is probably Earth's cultural imperialism, by sending our radio waves out into space that is the real cause for the justified self-defense of the aliens. Also, the aliens who are the soldiers are probably from the poorest parts of the alien culture, and therefore have no hope. Perhaps if their alien civilization could provide them with jobs and a way out of poverty they would have no need to make justifiable war on the earth.
Perhaps if Earth, in the movie, offered a package of alien aid, to make up for our Earth centric imperialism, we could understand their culture better.