https://www.theguardian.com/technology/2022/jul/25/pictures-of-happy-children-to-fight-child-sexual-abusers-ailecs-lab-afp-australian-federal-police

The volume of child sexual assault material online is on the rise. An Australian project is crowdsourcing images of safe children so it can find those in danger

Leading Senior Constable Dr Janis Dalins is looking for 100,000 happy images of children – a toddler in a sandpit, a nine-year-old winning an award at school, a sullen teenager unwrapping a present at Christmas and pretending not to care.