Tony Liberté recently began publishing some very good libertarian-themed comics on his Facebook page Libertarian Humor. Here is one from today titled Taxation Without Consent that I found particularly great:
UPDATE 02/17/2013: Today Tony released another comic called Social Contract in response to a popular criticism:
I encourage anyone who believes that taxation is legitimate to read Lysander Spooner’s No Treason, a series of three essays: No. I (1867), No. II: The Constitution (1867), and No. VI: The Constitution of No Authority (1870).
Lysander Spooner’s quote from the first comic is from A Letter to Grover Cleveland:
If taxation without consent is not robbery, then any band of robbers have only to declare themselves a government, and all their robberies are legalized.