thou shalt not kill

"I want to make a special appeal to soldiers, national guardsmen and policemen: each of you is one of us. The peasants you kill are your own brothers and sisters. When you hear a man telling you to kill, remember God's words, 'thou shalt not kill.' No soldier is obliged to obey a law contrary to the law of God. In the name of God, in the name of our tormented people, I beseech you, I implore you; in the name of God I command you to stop the repression."

Oscar Romero

Morality and Law

It may be true that morality can’t be legislated, but behavior can be regulated. It may be true that legislation cannot change the heart, but it can restrain the heartless. It may be true that the law cannot make a man love me, but it can keep him from lynching me.

Martin Luther King, Jr.