Not sure if these belong in Short Films or Documentaries. These are PSAs for kids. ED2k links at the end.
The Strange Ones (Color, 70's Version)
https://www.youtube.com/watch?v=-cLGQa4jil8Don't take candy from strangers; protect your no-no areas. Educational film illustrating ways to avoid being molested by the strange ones. Updated version with same soundtrack by Mrs. Perkins, Policewoman as earlier B/W Version. The 'strange ones' are "not sick like you or I have the cold or measles but, rather, sick in the mind." My name is Mrs. Perkins and I'm a policewoman. Look for the 70 year old 'salesgirl'.
The Strange Ones (1963)
https://www.youtube.com/watch?v=wk_qxfIQeQ4Another Sid Davis film in which vulnerable children wander in an urban-suburban landscape filled with menace. The film warns children about the strange ones, the films term for pedophiles. Karen lets a strange man buy her candy and gets in his car. In this dire cinematic world, children play alone in junkyards or shoot baskets in desolate concrete playgrounds where men lurk in the shadows, waiting for a right moment to move in on their prey. Classic Sid Davis "children in danger" film.
Say No To Stangers - Official Version from BFI (1981)
https://www.youtube.com/watch?v=89TmSYj8PK4'Say no to strangers' was released in 1981 by the Central Office of Information (a now defunct government body). It was one of a series of films that together formed the 'stranger danger' message. These films were often used as a teaching aid in schools, sometimes delivered by a police officer.
The message that 'strangers are dangerous' was simple, and the instruction to children to 'say no to strangers' was equally straight-forward. However, during the 1990s and 2000s questions and concerns about the 'stranger danger' approach were raised. Whilst children might understand the message, are they able to actually distinguish a stranger from a non-stranger? Even if they can, are they able to resist an enticement from a stranger?
Whilst the scenario of the male would-be abductor driving a car, preying on young girls, is still very much a reality on the streets of the UK today, it is one of many scenarios in which abduction occurs. Other children are abducted by people they know. In many cases the victim may regard the offender as their 'boyfriend', having been groomed. Many victims initially go willingly with or to the offender.