.. however, isn't that almost entirely from people known to the child? Authority figures, teachers, priests, step-parents? "Stranger danger" was in some ways a recoil from recognizing how bad the "system" was in secret, as it relied on abuse of trust.
I think that only reinforces the fear. The old thinking was the danger was the guy in the van snatching up children. Now we assess the danger may be the father of the kid next door.