Free Hess, a pediatrician and mother, had learned about the chilling videos over the summer when another mom spotted one on YouTube Kids.
She said that minutes into the clip from a children’s video game, a man appeared on the screen — giving instructions on how to commit suicide.
"I was shocked," Hess said, noting that since then, the scene has been spliced into several more videos from the popular Nintendo game "Splatoon" on YouTube and YouTube Kids, a video app for children. Hess, from Ocala, Florida, has been blogging about the altered videos and working to get them taken down amid an outcry from parents and child health experts, who say such visuals can be damaging to children.