Gene Callahan at ThinkMarkets offers an excellent post explaining why axiom-of-non-coercion-style libertarian arguments just aren’t very illuminating.
[E]very wavelength of the political spectrum considers some coercion to be OK, and some to be “aggression.” Anarcho-capitalists believe that coercing a trespasser off of one’s property is OK coercion, and collecting taxes to be “aggressive” coercion; while Marxists consider dividing up the social product per “each according to his need” is OK coercion, while hiring guards to block workers from ownership of the means of production to be “aggressive” coercion. So the question is not who is for or against coercion (since everyone is for “just coercion” and against “unjust coercion”), but, rather, what makes a particular act of coercion just or unjust?
In the comments, somebody predictably pipes up to say:
The example you cite of “coercing” a trespasser off of one’s property does not, in my opinion, constitute coercion, because this is the owner’s property, and people can do what they want with their property.
Here we see the impulse to conflate coercion and unjustified coercion. But threatening to shoot a guy if he doesn’t get off your lawn is pretty clearly coercive even if it is your lawn. And this kind of gun-waving threat requires justification. But there’s no justificatory story all reasonable people are logic-bound to accept.
There’s just no escape from honest intellectual toil. Theories of freedom are not free.