How the lighthearted social media trend of 'teen takeovers' took a serious turn

What has been confirmed

• When Damarion Spann, 18, saw an Instagram flier calling for a massive gathering on a beach near downtown Chicago, he immediately wanted to go.
• Thousands of others joined him that night on the sand, blasting music and dancing.
• The cultural trend of so-called teen takeovers has popped up across the U.S.

What remains unknown

Nothing reported so far is still awaiting independent confirmation.