Irwin Schiff, the author of The Federal Mafia: How the Government Illegally Imposes and Unlawfully Collects Income Taxes , was found guilty on 13 counts in a Vegas court for not paying his taxes. It turns out the theory that taxes are voluntary doesn’t really work in practice in a federal court. Said a friend of his at the trial, “The people with the tax honesty movement aren’t a bunch of wackos who are just trying to twist the law in their favor.”