Somebody or somebodies chose not to show it in the US for a decade. The episode was not offered to US networks at all. The official reason given was the presenc

Somebody or somebodies chose not to show it in the US for a decade. The episode was not offered to US networks at all. The official reason given was the presence of hallucinogenic drugs, even though four or more other episodes featured drugs. I doubt it had anything to do with the audience, it was likely backroom manoevering. The US Networks didn't "ban" it, they weren't offered it in the first place, so their hands are clean of censorship. Did they tell the producers that the episode was unacceptable? I don't know. Since they didn't receive it, it never went as far as the FCC or whomever issuing a ruling against it. The video lined in the post gives an account using the verb "ban" and I went along with that.