On August 17, 1945, George Orwell's Animal Farm was published.
It's so easy to read, even liberals can understand it. Donate two dozen or so copies to your kids' class. Make sure to underline the passage where Orwell encapsulates the hypocrisy of the liberal notion of social justice: "All animals are equal. But some animals are more equal than others."

Psalms 118:8 It is better to trust in the LORD than to put confidence in man.
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Scarlet Chord Ministries   Isa 1:18