"Stranger danger" is the idea or warning that all strangers can potentially be dangerous. It is an example of a moral panic that people experience regarding anyone that they are unfamiliar with in society. The phrase is intended to encapsulate the danger associated with adults whom children do not know. The phrase has found widespread usage and many children will hear it during their childhood lives. Many books, films and public service announcements have been devoted to helping children remember this advice. The concept has been criticized for ignoring that most child abductions and harm result not from strangers, but rather from someone the child knows.