"PREJUDICE"?
Perhaps one ( the one with George Takei, perhaps, but that was more about WW II and being against American Japanese spies and sympathizers, than race! ), but that's the ONLY one that the "prejudice" was about something other than class/money; not race nor religion.
Actually that one was about the internment camps. And got banned for decades. Then of course there’s the Nazi episode. Then the alien episode where everybody turns against each other, sure they’re all white, but when the chips seem down they all find a way to declare everybody else “other” and hate them. It’s all there, you just gotta be willing to see it.