The Non-Aggression Principle describes the philosophy that we all live in our personal lives without thinking about it. Don’t hurt people and don’t take their stuff. What makes the NAP unique is its logical extension of these rules to those that hold authority in our society. Organizations like the government are just groups of people so they should not be immune to the moral standards that we all live by.

https://en.wikipedia.org/wiki/Non-aggression_principle
http://archive.lewrockwell.com/block/block26.html