hey writers if you want to make a metaphor for racism, please maybe remember that racism is literally based on nothing. Africans weren’t enslaved en masse because the Robo-Musa threatened to destroy the world, they were enslaved because it was economically rewarding and politically convenient. If at any point your allegory for racism includes “so <oppressed group> did this major catastrophe and” then you have not only missed the point but you are literally reinforcing the ideas that racism have let racism self-perpetuate (that e.g. black people are naturally dangerous and violent and must be contained or begrudgingly accepted by the Nice White People)
same with any group (i.e. nationality, beliefs, etc.). there doesn’t need to be a logical reason. whatever later justifications your characters come up with for their racism/xenophobia, etc., are totally 100% fake. even if you think “no reasonable person would see that as a good justification” you’re not writing reasonable people
“The Japanese [i.e. their government] attacked us! Round up all the Japanese [i.e. American citizens] and punish them for it!” The illogic of that seems obvious, but if you confuse and spread fear among your own population, they will believe you and support the oppression
so if you write “oppressed group negatively affected us and now we punish them” as the reason for their oppression, write it knowing the oppressors made it up and are lying. oppressors always own the story, write the history, and hide the truth. uncover the lie at some point or your allegory is incomplete
This is an extremely critical question white fantasy authors need to start asking themselves. Not ‘why does racism exist’ but ‘who benefits from said racism?’