They're more common among relatives than total strangers.
About a year or so ago I saw on Nextdoor a neighbor posted about that some girl who always walked home from school whom he waves to when he sees her. One day she was walking slower than normal, and she ran to him scared, they didn't actually know each other, on the Ring footage you can see that a car that was following her drove off. Who knows if all these cameras are helping to prevent so many incidents, but the world is still as evil as ever. Just because its rare doesn't mean that you as a parent want to win the misfortune lottery.