teaches don't want you too know what their telling your kids. An earlier post (edit: found it - https://thedonald.win/p/GvFfvKa6/why-dont-public-schools-want-par/c/ ) was comparing slave owners and the kkk to police, going as far as to show them kneeling on a black man. This kind of propaganda had been used before on school children to demonize a group of people.
The nazis used a book called "The Poison Mushroom" to demonize the Jews.