The fact is that the government, like a highwayman, says to a man: "Your money, or your life." And many, if not most, taxes are paid under the compulsion of that threat. The government does not, indeed, waylay a man in a lonely place, spring upon him from the roadside, and, holding a pistol to his head, proceed to rifle his pockets. But the robbery is none the less a robbery on that account; and it is far more dastardly and shameful.
-Lysander Spooner - No Treason: The Constitution of No Authority