Continued from the QTDDTOT >>>104111:
How would you say vigilante justice on another's behalf would work in ancap? "Vigilantism" in defense of one's own property and community is simple enough to justify, but acting to defend the rights of another person who has not employed you could get a little complicated. Let's say you're a prospective vigilante, and you were very reasonably certain that Smith was keeping Jones chained up in his basement without Jones's consent for Smith's own amusement. You are acquainted with Jones, but he is neither a member of your family, nor a client you are paid to protect, nor has he called for your assistance that you know of.
In my view, it would work something like this: You couldn't simply break into Smith's house. But, if you have told Smith that he is violating Jones's rights and you will work as Jones's agent to defend his rights if he does not cease, you would be in the right to take whatever steps are necessary to free Jones. However, if for whatever reason upon being freed Jones refuses to acknowledge you as his agent, and does not recognize you as acting in defense of him, Smith is only then liable to sue you for property damage. Does this sound accurate?
Obviously, in most cases acting as an agent on someone else's behalf would be considered fraud. But, as the person as whose agent you are acting would be the one who presses charges against you, if he decides he's okay with the actions you've taken in his name and gives them the stamp of approval, it's not an enforceable infraction.