The Non-Aggression Principle (NAP), the cornerstone of the market anarchist framework, can be expressed as such :
No one has the right, under any circumstances, to initiate force against another human being, nor to delegate its initiation.
L. Neil Smith
Although a pacifist obviously follows the NAP, the NAP does not demand pacifism, as self-defense is not an "initiation" of force by definition. Of course, the issue is then raised of what consists and does not consist self-defense, an issue I have no intention of getting into here. Suffice it to say that for the sake of discussion the notions of self-defense as defined in our current laws are good enough for a first approximation (i.e. anyone pointing guns at anyone else is fair game).
Superficially, most people support the NAP, and do not use force in their own lives. However, when it comes to the violence and coercion inherent to government, we get the old excuse of "that's how the system works". Policemen and soldiers routinely gun down, jail and otherwise make life horrible for people without fear of punishment. They feel perfectly legitimized - in fact, they are proud of it ! - because their actions are sanctioned by government, which is itself legitimized by its own propaganda. And the population in general has no qualms supporting the existence of a monopoly of police and army, and supporting wars, because they are too brainwashed to examine these things from a moral perspective.
So once again we have to come back to the Moral Razor. If something is moral for one person, then it must be moral for all people. It is good that any person be honest, and therefore honesty is a virtue for all. It is good that any person be rational, and therefore rationality is a virtue for all.
What about "killing the enemies" ? "Shooting down criminals" ? "Arresting people for illegal acts" ? "Collecting income tax" ? If it is proper for a few, and not proper to all, then that makes it indefensible. Either anyone should be permitted to kill their enemies, shoot down criminals, arrest people for acts they find illegal, or collect income tax for themselves, or we are no longer in the realm of morality, but rather in the realm of exploitation of one group against another.
Of course, the eager defenders of democracy will pipe up and claim that all of this coercion is justified by good intentions and goals. This is, of course, complete and utter nonsense. Whatever your intention is, if you need to kill or ruin people's lives for it, it's not a good intention ! If I hold you up but claim that I will use the money I steal from you to give to a good cause, that does not make my theft any more moral, only more hypocrite. It is a mass mentality, the democratic knee-jerk reflex of invoking government for any problem, without any consideration as to whose lives are being trampled.
The market anarchist solution is that you actually have to deal with other people's values, and live like adults, instead of fighting for a paternal government's gun. If your intentions really are good, then prove it. If your cause is just, then sell it. If you're right, then you'll have many takers. If you're wrong, then few people will follow you.
Of course, market judgment is the last thing statists want. They wish their coercive ideas to be enforced without reference to other people's values, because the very nature of democratic government is that of a constant struggle to get one's values enforced over others. Like Christians who hide behind their interpretation of "divine laws" to escape moral judgment, the statist hides behind the coercive "common good" in order to escape judgment from their peers, and derides us as "pacifists".
Thus is the way of the Aggression Principle, the way of the coward and the brute.