Force

Anarchy is might makes right on an individual level. Government is might makes right on a local, state, and or federal level.

In the end, governmental powers are all directly related to the use of force. Our own voluntary compliance creates an illusion which obscures this... but the fact that the sheep walk willinging into the slaughter house doesn't change what goes on inside.

This is why government police forces and military must be tightly controlled. Armed citizens are protected... but armed citizens with a disarmed government are far safer indeed.