Their childhoods are on display for millions. States want to protect them.

A couple of years ago, Alisa Jno-Charles saw her now 9-year-old daughter watching a YouTube video of several children and their swift ninja moves.

The video was from Ninja Kidz TV, a YouTube channel that features four young siblings who were raised in a martial arts studio, according to their official website. The channel has about 23.9 million subscribers.

Jno-Charles scrolled through the Ninja Kidz TV videos and noticed that the content featured more than just the kids’ ninja antics: Every single part of their lives was documented, she said.

“It was their first date, and their insecurities about social situations, and major life decisions — like the type of school they should go to — and their birthday parties,” Jno-Charles said. “It was everything. And that didn’t sit well with me.”