Repeat, had to. My one recommendation for anyone interested in freedom, and both its friendly and hostile forces, would be Henry Hazlitt's Economics in One Lesson. Hazlitt's conversation masterpiece is oncise, grounded in fundamental economic principles, illuminated with historical examples, void of arcane economist-speak and pointy-headed graphs (Sorry, economists. You know it's true.), and crisply written.
Line one, chapter one: "Economics is haunted by more fallacies than any other study known to man."
Here is a good introduction to the book, Hazlitt, and the enduring impact of this brief book, compliments of the Ludwig von Mises Institute: