Overview

• On May 26 in Palmerston North, 19-year-old Ryan Satterthwaite suffered catastrophic head injuries taking part in the 'Run-it-straight' challenge and died the following day.
• Participants charge head-on over a 20-by-4-meter field without helmets or padding to see who can overpower the other.
• New Zealand Police spokesman Ross Grantham warned citizens to weigh the significant safety risks before engaging in the unsupervised collisions.
• Experts such as Patria Hume of Auckland University of Technology say the stunt contradicts decades of research linking repeated impacts to concussions and chronic traumatic encephalopathy.
• Petitions in Germany are calling for banning social media access for under-16s to prevent the spread of dangerous viral challenges.