SF theme
I have this mechanic, there are "rebels" that start a rebelion/coup/usurp and try to defeat you (the Emperor). They don't try to become independent or do it because they are unhappy (but that might be a factor too - people support them more if they are unhappy), they want to take over the power or simply destroy you.
I have a problem because the word "rebels" instantly gives you an impression of "poor honest people who fight the corrupted government", since that's the recurring theme nowadays :D While it's more like "a secret organization that brainwashed/coerced/terrorized part of population and now they started a rebellion".
I need, I don't know, a different name for this? Or some better explanation I could give to the player?