TikTok's new challenge luring young kids to their deaths

Blackout challenge, also called the 'pass-out challenge', encourages kids to hold their breath until they fall unconscious, sometimes with the help of objects

The 5-year-old boy's panicked cries echoed down the hallway of the Arroyos' three-bedroom clapboard house in Milwaukee. It was February 2021, and he'd been playing with his 9-year-old sister, Arriani, before bedtime. Their mother was at a Bible study class, and their father was in his basement workshop. The boy watched Arriani climb atop a toy chest, wrap a metal dog leash around her neck and hook the buckle to the wardrobe door. Now she was hanging 2 feet from the ground, kicking and desperately scratching at her neck.