A 15-year-old wearing a helmet camera allegedly killed a school employee and wounded two others in Poland's second school stabbing attack in two days.
https://www.foxnews.com/world/teen-wearing-helmet-camera-kills-worker-polish-school-amid-fears-copycat-attacks
https://www.foxnews.com/world/teen-wearing-helmet-camera-kills-worker-polish-school-amid-fears-copycat-attacks