Sorry I beg to differ with you on this Bill. As looking at the larger picture here, the aliens can stand in for the "master race". Indoctrinating the feeble humans like Hitler youth to do their bidding. I think there are many sub text points in this film that one can draw parallels to the Nazis.
Even some of the signs in the backround of some scenes. "Talk about your job and loose it" Graphics not unlike Nazi propaganda. Even the the large V emblem reminescent of the swas-tika.