Slavery still exists in the form of forced labor and human trafficking, including here in the u. s. Will these ever end, why does it still exist?

Slavery is banned, as of course, it's immoral however, lots of modern day cults, have been discovered to be doing things like forced labor and human trafficking. One of the most famous cults, is NXIVM, and the guy who was in charge, was found to have been doing both. He's now serving a 140 year prison sentence for it, and will likely die in prison.

Why do people still do this, even though, our conception of slavery, is banned

Slavery still exists in the form of forced labor and human trafficking, including here in the u. s. Will these ever end, why does it still exist?
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