When then Jesus said to His disciples, “In the world, kings lord it over their subjects . . . Not so with you”; He was not beckoning His followers to a legalistic withdrawal from society out of concern for moral purity. Rather, His call was to an active missionary presence within society, a source of healing and creativity because it would take the pattern of his own suffering servanthood.

Jesus thereby unmasks the pretension to use violence for the good as being a form of hypocrisy: these rulers call themselves “benefactors” but they are not servants. He who would claim to have the right to use violence, and especially legal violence, against another, places himself outside of the scope of Jesus’ mode of servanthood. This is not so much because he sins against the letter of the law from the Old Testament or the New but because he claims (with a pride intrinsic to his position) to have the right — (whether on the basis of official status, of superior insight, or of his moral qualities) — to determine in a definitive way the destiny of others. The older language in which the theme of “conformity to this world” was stated in Bible times had to do with “idols,” with those unworthy objects of devotion to whom men in their blindness sacrificed. Thus it is quite fitting to describe the use of violence as the outworking of an idolatry. If I take the life of another, I am saying that I am devoted to another value, one other than the neighbor himself, and other than Jesus Christ Himself, to which I sacrifice my neighbor. I have thereby made a given nation, social philosophy, or party my idol. To it I am ready to sacrifice not only something of my own, but also the lives of my fellow human beings for whom Christ gave His life.

- John Howard Yoder, “Christ, the Hope of the World” in The Original Revolution: Essays on Christian Pacifism, 174-75

A bit dated, but read the entire article and quote here.