I believe in the rule before " an eye for an eye. a tooth for a tooth". We are not God, but we people should make a move to have justice for those who have been abused and oppressed.
Do you think that only god has the power to punish the criminals? Then what about the judiciary and the cops? If you don't want the judiciary to punish the criminals, then what is the point in spending billions of USD every year on the maintenance and salary on courts? IMO, religion is not a factor here and it should stay out. The judges will decide whether someone deserve the death sentence or not.