You're referencing Jedi? Where does the slavery come on?
Child soldiers... I can see that argument, but I don't agree. Jedi are combat capable, but as I understand, combat is not their purpose or even a core responsibility. That's just focused on for movies. Jedi are more comparable to monks. They're focused on connecting with the world, helping people connect with the world, and mediating conflict. The light sabers are supposed to only come out when harm is imminent. Even in the movie, light saber training is portrayed more a method of better connecting with the Force. Now, you could argue that's propaganda, but I don't buy that, either. If the person being trained believes violence is a last resort and uses it only as a last resort, then it goes from propaganda to truth. Hell, there are many times where the Jedi try to talk with people in the empire before the pew pew starts.
Just remember, movies wouldn't sell if they were just Jedi doing conflict resolution. We should be complaining more about the profit incentives for art rather than Empire vs Republic 🤣