Garnet, Steven and others in “Unfinished Business”

Garnet

That's right! Pink Diamond's insidious human zoo.

Steven

What?

Garnet

During her reign on Earth, Pink Diamond stole humans from their families as trophies of her conquest.

Amethyst

You gotta be kidding.

Pearl

Oh, no. It was very serious. When I still served… Homeworld, I saw it myself. A private menagerie deep in space. Humans in captivity. We were never able to rescue them. We had no way to get to them after the war. But, that was over 5,000 years ago.