How do DASTARDLY ADULTS become mean-spirited and vengeful 'DASTARDS?' Maybe look into 'MOTHER GOOSE' of the 1800s!
Here’s a little, “tame-seeming”. MOTHER GOOSE book (1880), with illustrations and captions that may hold some answers:
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No ‘hidden’ meaning in these last two, just some odd pages. In any case, enjoy the few examples of certain attitudes which can be transferred to young readers!––Grandpa’s library-to-?
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Now I'm sure of it: We can blame the current mean-spirited political environment on Mother Goose! You're on to something! :-)