Not to forget the classic "Spirit of Dark and Lonely Water" narrated by Donald Pleasance:

https://www.youtube.com/watch?v=XNPMYRlvySY

Couple that with 'children's' TV program "The singing ringing tree" and it is a wonder any of us grew up even vaguely normal.

How would you know how sane people would act, if all the people around you were raised similar?

That film is disturbing for adults, let alone kids. The cut to the girl screaming is terrifying.

That reminded me of The Gashlycrumb Tinies:

https://en.m.wikipedia.org/wiki/The_Gashlycrumb_Tinies

... I feel like some cultural element, at least during a certain era, is coming into focus for me.