Just saw this one last night, and was absolutely astounded at how brilliant it was. I think it's an incredibly accurate portrayal of the human condition, and not only WOULD we be likely to respond to an out-group in this fashion, but we already HAVE, numerous times throughout history. I was also pleasantly surprised at the character of Wikus... he was actually HUMAN, unlike the vast majority of "heroes" in film. For much of the movie, I couldn't stand the guy, but his redemption at the end was incredible, and yet humble.
Fantastic film. Were this the state of the world in reality, I'd rather be a prawn... they had more humanity than the humans.
SD