Here in Denmark a 15-year old girl and boy was filmed while having sex, and the video spread around among teenagers, apparently mostly through Facebook Messenge

Here in Denmark a 15-year old girl and boy was filmed while having sex, and the video spread around among teenagers, apparently mostly through Facebook Messenger. In 2018, the police indicted 1000 of them (tracking them down with Facebook's help). Legal results were a child-porn law judgement for 334 of them, and simpler penalties for 400. The child-porn judgement was mostly suspended sentences, but it precludes working with children (as a teacher or even sports trainer if children under 15yo are involved) for between 10 and 20 years. If there was a system that would have caught it sooner, prior to sharing, the spread would be minimized. The police took 3 years to form a plan to indict the 1000+ people.