Bob Halderman has been arrested and indicted for a Victimless Crime: Offering to keep quiet about something David Letterman did, in exchange for a couple of million dollars. <http://online.wsj.com/article/SB125449900451259695.html?mod=WSJ_hps_MIDDLEThirdNews>
In a libertarian regime, this would not be punished, because Halderman would perfectly justified in actually DOING what he offered to do (keep quiet), and moreover would be perfectly justified in doing what he "threatened" to do (expose Letterman's actions). Thus he did not Initiate Force, nor did he Threaten to Initiate Force. But suppose Letterman had told him, "I won't pay you anything, but if you do expose me I will ask the Authorities to imprison you for Extortion." Then Letterman would not have been committing a Crime under New York Law, even though this IS a Threat to Initiate Force. Thus New York Law makes a Crime of a Victimless Act, and does not punish Initiation of Force and indeed encourages it and engages in it.