Sadly human trafficking is about as old as mankind (and womankind - to satisfy the politically correct Newspeak advocates) itself. Humsns were captured and displaced for the purpose of being exploited, not only sexually. This habit was almost certainly introduced on a large scale by some tribes living in deep Africa, who supplied the slaves to ancient Egypt. There was no way Egyptians themselves could have caught the huge number of slaves they needed for their projects. The "heart of Africa" was simply too inaccessible then, so slaves were bought from those with local knowledge. Up to the abolishment of the Western slave trade it was Africans, who actuslly captured and sold the slaves to white traders and exporters.
Sadly the slave trade is still alive and well within Aftica and Asia as the msin suppliers of slaves.
I am indeed in favor of using deadly force yo prevent this from happening, bur bur often the victims ate lured to their destination by false job promises leading to shameless exploitation. Such practices are very hard to combat, as most victims just "disappear" never to be seen again.
The crime of scsmming is, besides, closely connected and often run by the same exploitation rackets, that trade in slaves.