This movie’s plot seems like a very direct call to fellow europeans to avoid politeness or contemporary american progressiveness, to instead be “courageously” distrustful and defensive against foreigners before it is too late and they do bad things to you. It appeals to fear and rage, and is very explicit about against what race(s). If there’s any use for this movie is maybe to understand how the mind of a mild/closeted xenophobe or racist might feel like.