- Critical Research Failure: Referring to the Chumash, Spike says "You [i.e. white Americans] exterminated his race." This is technically incorrect, as there are still several thousand Chumash living in and around the California area today.
- Designated Villain: Buffy briefly has some guilt over having to fight a spirit with a very justified grudge, but the episode quickly plows past it. Of course, as Spike points out, what said spirit wants is to murder everyone as revenge for the massacre of his own people, so short of letting themselves be brutally slaughtered, there's not really anything that can be done about it.
YMMV / Buffy the Vampire Slayer S4 E8 "Pangs"