Are there any black people in Scientology?

It turns out that was not true.

South Park's 2005 "Trapped in the Closet" episode depicting Tom Cruise.

Herzog I never heard from Tom Cruise's camp [about the infamous 2005 episode "Trapped in the Closet," in which the star is depicted hiding in an actual closet, refusing to get out], but we did our best to let everyone know that it was coming. I let the people over at Paramount [Comedy Central's sister company that has Cruise's Mission: Impossible franchise] know, gave them a heads up. But I think everyone understands Matt and Trey are going to do what they're going to do.

Stone When we did the Scientology episode, [Isaac Hayes, who was a Scientologist] came over, and I sat with him. It was like a day or two after, and it was pretty obvious from the conversation that somebody had sent him to ask us to pull the episode. It had already gone on the air, and we didn't tell him because we didn't want him to be held accountable. Plausible deniability. [Four months after "Closet" aired, Hayes quit the show via a statement, supposedly in protest.]

Hayes III Isaac Hayes did not quit South Park; someone quit South Park for him. What happened was that in January 2006 my dad had a stroke and lost the ability to speak. He really didn't have that much comprehension, and he had to relearn to play the piano and a lot of different things. He was in no position to resign under his own knowledge. At the time, everybody around my father was involved in Scientology — his assistants, the core group of people. So someone quit South Park on Isaac Hayes' behalf. We don't know who.

Stone We sort of figured out the whole picture a bit later, but that's totally what happened.

Hayes III My father was not that big of a hypocrite to be part of a show that would constantly poke fun at African-American people, Jewish people, gay people — and only quit when it comes to Scientology. He wouldn't be that hypocritical.

Stone It really sucked, the whole thing. This statement put out that he was quitting, it kind of called us bigots.

Parker But we knew in our hearts there was something way more rotten going on.

Herzog We always have their backs. The few times where they might look back and say, "You didn't really have our backs there," that's just a place where we'll have to agree to disagree.

http://www.hollywoodreporter.com/features/south-park-20-years-history-trey-parker-matt-stone-928212

It sounds exactly like what those scientologist people do.