Over/under when he is fired. Using “Untermensch” is about as antisemitic as one can get.
Won't be for that meaning. When someone figures out that along with Jews, Roma, Poles and assorted eastern Europeans it also refers to blacks, he'll be gone. How stupid, he didn't even know he was an Untermensch.
Don't think they used it for homosexuals, if they did, he'd be fired twice.