Content warning: This story contains description of extreme and disturbing violence, suicide, child abuse and cruelty to animals.

Luis, a 28-year-old student from Colombia, works through the night moderating videos for TikTok. During the day, he tries to get some sleep, but sometimes the videos haunt his dreams.

He remembers one video taken at a party, with two people holding what initially looked to him like pieces of meat. When they turned around, it appeared they were holding skin and gristle which had been flayed off human faces. “The worst thing was that the friends were playing games and started using the human faces as masks,” he says.

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