Everyone is pointing out various news articles that show that people do indeed call CPS when you let your kids play by themselves at a playground. I won't dispute that it happens, but to me this is similar to how we view other low-probability events. If I let my kids walk to school or the playground by themselves there's also a chance they can get hit by a car crossing the street. I can teach them safety rules and arm them with the tools they need, but there's always that chance. If you were so inclined I'm sure you could find countless articles about unsupervised kids getting hit by cars (or whatever other horrible thing you wanted to dig up, child abduction, etc etc). And yet that's a low-probability risk that we readily accept for the trade-off of fostering a child's independence and not being held hostage by every small risk in this world. Some asshole calling CPS and causing serious annoyance and maybe even emotional trauma is a real risk, but I'd argue it's super low probability (lower than the risk cars on the street pose). So yes, it happens, but that doesn't mean we have to change our behavior. We just have to accept that risk just like we do thousands of others in the course of daily life.