I just finished reading the shadow of Kyoshi and one thing I noticed is that all nations are the manifestation of different parts of fascism.
The earth kingdom is bureaucracy (and corruption.)
The fire kingdom is authoritarianism.
The water tribes are incredibly sexist.
The air nomads are religious fundamentalists.
All nations are.. well, filled with nationalism. (The air nomads arenāt as much as the rest but they still make up some pseudo elite that is distinct from everyone else)
If thatās the normal order that the avatar is supposed to uphold or rebuild, it makes sense that the antagonists in Legend of Korra are caricatures of different leftist ideas.
The world is inherently fascist.