I still don’t see how this is any different from a mugger’s ultimatum. The mugger says, “Do X, or I’ll do Y.” The government says, “Do X, or we’ll do Y.” Nothing forces me to comply with the mugger, nothing forces me to comply with the government. If you say, “The mugger is initiating the force by giving you the ultimatum.” Why isn’t the government initiating force by giving you an ultimatum?
It is not an ultimatum. You are free to do as you wish unless you prevent someone else to be free.
By your logic I can’t put up a sign that says “Stay off my property or else.” either, because that would constitute an ultimatum against anyone who wishes to come on my property, or murder my children for that matter.
Surely you do see the difference between someone acting to defend individual rights and someone acting to violate those rights?
As far as something forcing you to comply with the mugger, the threat of force obviously does. Also, the threat of law forces you to not violate anyone’s rights. The difference is that in the first instance your rights to life, liberty and the pursuit of happiness are being violated.
In the second case, they are not being violated, as long as you respect this system of rights. If you don’t, well then by what moral or political principle do you expect to have your rights respected?
P.S. The problem with anarchists, and the libertarian movement in general, is that their ideas don’t rest on the foundation of a rational philosophy. Instead, they base everything on principles which come out of thin air. (Or rather are borrowed from philosophers such as Ayn Rand, but without the context in which she meant them, so they are constantly misinterpreted)
For instance, saying that the use of force is wrong is a statement which has no basis. Why is it wrong? Is it wrong when someone is about to kill you? If not, then the statement “the use of force is wrong”, without any further context, is false.
Yet, that’s what anarchists base their ideas on.