Warning: This episode includes sensitive content about the sexualization of children.

For several months now, reporters at The Wall Street Journal have been looking at the algorithms that recommend content on Meta’s platforms, specifically Facebook and Instagram. They’ve found that those algorithms promote child sexual abuse on a mass scale to users who show sexual interest in kids. Meta argues that it uses sophisticated technology, hires child-safety experts and reports content to help root predators out. But the problem persists, according to Wall Street Journal reporter Katherine Blunt. She told Marketplace’s Lily Jamali what she learned by setting up test accounts, including some that followed young influencers on Instagram.