Lincoln?
By revoking habeas corpus, arresting any reporters critical of his administration, using federal troop to block the Supreme Court from being seated, to start with...
And the confederates killed men and women for attempting to leave the south
Oh, sure. That's why Sherman said this:
We're not only fighting hostile armies, but a hostile people, Sherman explained; as a result, they needed to make old and young, rich and poor, feel the hard hand of war.
By marching through Georgia terroizing the citizens in an attempt to abandon the confederare cause. Burning houses, stealing live stock and produce along the way. Because the North had such a morally correct stance.