Honestly speaking though, there’s nothing wrong with slavery.
People in general can’t make decisions for themselves and look for a suitable leader to tell them what’s right and what’s wrong, what’s good and what’s bad for them (i. e. Teachers, the government, professionals like doctors, heck, even tribal leaders existed even millennia ago for that purpose)
These people in society can’t exist on their own and NEED to depend on others to survive. They aren’t lazy, not always, just incapable.
These “people” may look like people, act like people, but they are not people. They are tools. They exist to serve those willing to use them and they will gladly seek out that purpose if it fulfills them a sense of duty. These are the people that would be used in slavery. Not based on race or on religious beliefs, but on personality.
With that, human progression will grow and cultivate better the more these tools pop out.
I mean, let’s be real, these slaves exist already, we just don’t call them slaves. Corporate drones, the working class, people just trying to make a living to survive, and people just trying to find a reason to survive.
If things are already this bad, with people being slaves without the title, then what’s so wrong about trying to make things get better for the majority and just make slavery a thing?