KQComics2

An evil nation can represent things like corruption, despair, sin, sickness, hatred, self-doubt, trauma- anything that poses a threat and must be overcome by good can be represented by an army of evil. Often an evil race represents evil itself and the hero defeating them is good triumphing over evil. Call it cliche, but it's rarely racist. Would it be less problematic if the good guys killed good people rather than evil monsters? If the heroes represent pure good, then their villains being evil isn't racist. It's normal.

Not to mention that even in the scenario where the evil army in a story represents a real group, it still might not be racist. Great example: Fantasy Nazis. Is it fair to say that every person in Nazi Germany was pure evil? Absolutely not. Do we need to address that nuance in a fantasy story about their victims? No!