An episode from "Arachnid: Hunting the web’s darkest secrets" from TVO Podcasts, the Investigative Journalism Bureau, The Toronto Star, and Piz Gloria Productions:

The images are out there—millions of them. Each one a crime scene, each one a permanent scar. But while the Internet forgets nothing, a group of survivors and digital sleuths are trying to change that. They’re challenging the world’s biggest tech platforms to stop looking the other way—and start deleting the evidence.