And if he smite him with an instrument of iron, so that he die, he is a murderer: the murderer shall surely be put to death. / And if he smite him with throwing a stone, wherewith he may die, and he die, he is a murderer: the murderer shall surely be put to death. / Or if he smite him with an hand weapon of wood, wherewith he may die, and he die, he is a murderer: the murderer shall surely be put to death. / The revenger of blood himself shall slay the murderer: when he meeteth him, he shall slay him.It's the government's responsibility to act as the "revenger of blood". Shirking that responsibility has led to the kind of liberal chaos we are witness to in these times. Maybe the problem is with leaders that won't turn to God in matters where the judgment of humans is too flawed? See Deuteronomy 17.
Numbers 35:16-19
—try 5 Matthew v39, KJV—in the Sermon on the Mount—