Don't you agree that all taxes, no matter for what, involve coercion? By coercion, I mean the threat and/or application of physical violence to compel ertain behaviors.
Doesn't all law, including tax legislation, specify means of enforcement, always leading to sanctioned violence if the criminal decides to take it that far?
ertain = certain
Some people voluntarily follow laws and some people volunteer to be good citizens. Some people need some coercion. Some people need coercion to be good parents, to get out of bed, to not murder people. Some people don't need coercion.
Which again brings us right back to where we started.
And would you agree that grass, when watered correctly and when given sufficient amounts of sunshine and aeration, is green?