I think he’s thinking the other way where humans, elves and dwarves band together to oppress the poor orcs, goblins, trolls, ogres etc.
Then there is Katherine Kurtz where humans try to kill Deryni and a whole host of similar things with alien races in SF.
I suppose if you want to go literally, you could take into account Vampires & Werewolves banding together to kill humans…
Of course, that’s just a good idea in general….