The issue of current slavery got barest mention in Create a Character Clinic, as part of a development cycle. However, in reality, it deserves much more than a minor brush.
Here are other links you owe it to yourself to explore.
Finding information about current slave issues is a slow process. Disheartening, too. Some of this information is highly politicized. I apologize for the political aspects of those links; the stories, however, remain valid.
Informing ourselves, however, is a first step. Knowledge is power. Or at least a start.