It is rare for those who commit evil acts to acknowledge that their actions are evil, even to themselves. Very often the evil-doer will justify his actions to himself and others by claiming some over-riding superior purpose or moral imperative which supposedly outweighs the 'disadvantages' of the evil act, or by altering his perception of his target, or both. Historically, when action against a particular group is envisioned, (for the greater good of course,) that group is often depersonalized or demonized prior to action being taken. After all, if the subjects of your depredations aren't human, then whatever happens to them is their own fault, isn't it? (Well, NO, but that is a subject for another time.) In any case, such moral inversions are common among those who commit evil acts.
Some of those who wield authority in these presently united States have engaged in exactly this sort of psychopathic behavior. Characterization of those who respect the Constitution and the rights of the individual as 'bitter clingers,' 'extremists' or even 'terrrorists' are an effort to depersonalize those who oppose the present stampede towards collectivist totalitarianism. But those who presently wield authority have a problem. Not only are most of those who oppose them armed, and resolutely intent on retaining their arms, but the government does not know who they are or what weapons they possess. Not only that, but most of those who support the push towards victim disarmament are unarmed, and an unknown number of police and military members would probably fight on the side of the Constitutionalists.