repeat your ignorance and demonstrate you don't have any interest to understand that which you so eagerly mock?
RETALIATORY FORCE
The NAP doesn't forbid all use of force, only the initiation of it. If someone has aggressed upon another, it's both justified and moral to use retaliatory force. Fighting off an assailant, defending one's home from an intruder, and enforcing a court order for a contract violation are all justified. A rational, civilized society doesn't attempt to get rid of all weapons, it just sets the terms for their use. No one (including the government) may use force, except in retaliation.
http://www.groundedlibertarian.com/part-3-the-non-aggression-principle.html