When my child was an infant, my wife parked in a parking lot and starting chatting with a friend about 10 yards away. Minutes later a woman came by and starting claiming the child was not safe and was going to call protective services. This freaked both of us out that a stranger could potentially have the power to cause the government to become involved with our family. Fortunately, we didn't let that experience prevent us from letting our kids wander freely. But it does just take one over-concerned parent, to get you into trouble.

I had something like that happen I was out of town and forgot most places in America have a way more fascist child snatchers than where I live. The police contacted a national database check, their local child services, and my hometown child services. Thankfully my hometown child services told them to go fuck themselves (the place I live in now thankfully doesn't usually get involved unless there is serious abuse) and the ones in the place I was at didn't have time to deal with it before I left, but they certainly would have if I were a resident there.