Well, this children's book sure takes a French Turn. Hahaha!

Entryism?
https://en.wikipedia.org/wiki/Entryism

Are you a kind and gentle Trotskyite?
https://en.wikipedia.org/wiki/French_Turn

INFILTRATE is an advocated tactic of The New Left of Herbert Marcuse, mentor of Angela Davis.
Ask Saul Alinsky

Joseph McCarthy went a bit too far into the far right extreme,
yet nobody claims he was not on the correct trail