This right here.

Also sorcery. Look up its etymology, and you will find it shares a root with "sort," the noun:

late 14c., sorte, "group of people, animals, etc.; kind or variety of person or animal," from Old French sorte "class, kind," from Latin sortem (nominative sors) "lot; fate, destiny; share, portion; rank, category; sex, class, oracular response, prophecy," from PIE root *ser- (2) "to line up."

There it is right there. People treated like animals whom their "betters" hve selected for a particular category, rank, and fate.