“The premise is debatable that the perpetration of atrocities is sometimes a patriot's duty; that the poisoning of the public mind with distortion and falsehood designed to inflame passions is sometimes a patriot's duty; that the banishment of a loving Father of all men and the bowing down before a god of war is sometimes a patriot's duty. But if these be obligations resting upon patriots, let them be claimed as such in plain unvarnished language.”