9-year-old dies in viral ‘blackout challenge’ horror as parents demand accountability: 'It's life or death'

A Texas girl has died after accidentally strangling herself while partaking in the viral "blackout challenge," as her family is speaking out to warn other families of the dangerous trend sweeping social media. 

JackLynn Blackwell, 9, was killed after she choked herself in the backyard of her family’s Stephenville home on Feb. 3, according to CBS News. 

"She goes out to play like she always does, out in the yard. I noticed it’s kind of quiet — quieter than it should’ve been," her father...