Jon Chung
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I mean, pretty much exactly that has happened to their real-world inspiration multiple times.
I don't think that comparison works well if these guys literally have a curse that blights the land if they stay there for a month and you can prove it empirically, is the thing. "Kill them", in that case, shifts from "irrational xenophobic reaction to outsiders" to "practical countermeasure to avoid starvation".