'It’s not a game': Parents say social media ‘blackout challenge’ led to 9-year-old daughter’s death — what is it?

A nine-year-old girl tragically died after participating in the dangerous "blackout challenge" she saw on social media. Her parents are warning others about the deadly dare, emphasizing that it's not a game but a matter of life and death. They are calling for greater accountability from social media companies to prevent further tragedies.