The him to whom they are referring is a North American Indian Vengeance Demon- thingy.
Buffy, the Vampire Slayer's job is to kill evil thingies (vamps, demons etc get the point, literally.)
But the group is politically correct, except for Spike, the vampire with a chip in his head that acts like a painfully painful conscience, and they are agonizing over what must happen.
Buffy: Will, you know how bad I feel about this. Okay? It's eating me up-
Buffy: A quarter cup of brandy and let it simmer.
Buffy: But even though it's hard, we have to end this. Yes, he's been wronged, and I personally would be ready to apologize, but I...
Spike: Oh, someone put a stake in me.
Xander: You got a lot of volunteers in here.
Spike: I just can't take all this mamby-pamby boo-hooing about the bloody Indians.
Willow: Uh, the preferred term is...
Spike: You won. All right? You came in and you killed them and you took their land. That's what conquering nations do. It's what Caesar did, and he's not goin' around saying, "I came, I conquered, I felt really bad about it." The history of the world is not people making friends. You had better weapons, and you massacred them. End of story.
Buffy: Well, I think the Spaniards actually did a lot of - Not that I don't like Spaniards.
Spike: Listen to you. How you gonna fight anyone with that attitude?
Willow: We don't wanna fight anyone.
Buffy: I just wanna have Thanksgiving.
Spike: Heh heh. Yeah... Good luck.
Willow: Well, if we could talk to him...
Spike: You exterminated his race. What could you possibly say that would make him feel better? It's kill or be killed here. Take your bloody pick.
Xander: Maybe it's the syphilis talking, but, some of that made sense.
This scene actually asks a very important question, what does a politically correct person do when fighting a demon who is a visible minority?
Scripture to keep in mind
Six things there are, which the Lord hateth, and the seventh his soul detesteth:  Haughty eyes, a lying tongue, hands that shed innocent blood,  A heart that deviseth wicked plots, feet that are swift to run into mischief, A deceitful witness that uttereth lies, and him that soweth discord among brethren.  My son, keep the commandments of thy father, and forsake not the law of thy mother. ***Cf:Douay-Rheims Proverbs 6: 16-20
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