A state system, no matter what kind of state system it is, functions at a far remove from the requirements of Christianity.
In those countries where wise people are in power, their subjects do not notice the existence of their rulers.
State violence cannot be destroyed by decree, only by truth and love. Maybe state violence was necessary for previous generations; maybe it is even necessary now, but people should conceive of a kind of future government in which violence will not be necessary.
You should live in such a way that violence is not necessary for you.