Is taxpaying compulsory or voluntary or something in-between.

• The IRS itself is kind of schizophrenic in its terminology here.
• See Hannah Arendt's quote: in the words of Mary McCarthy, who first spotted this fallacy: “If somebody points a gun at you and says, ‘Kill your friend or I will kill you,’ he is tempting you, that is all.”  And while a temptation where one’s life is at stake may be a legal excuse for a crime, it certainly is not a moral justification.
• How much compulsion must the gov't use in order to absorb responsibility?  Is there a threshhold?  Does it depend on what they're trying to absorb responsibility for?  E.g., can you absorb the responsibility for someone committing murder on your behalf by threatening to commit vandalism against their car if they refuse?
• How does this play out in discussion of voluntary donations, vs. quasi-voluntary ones (e.g. Liberty Loans), vs. protection money & taxes?