"Around the world human traffickers trick many people into slavery by false promises of good jobs or good education, only to find themselves forced to work without pay, under the threat of violence. Trapped by phony debt, these slaves are hunted by local police and private security guards if they try to escape. Sometimes slaves don't even understand that they're enslaved, despite people working 16 or 17 hours a day with no pay. They're simply used to it as something they've been doing their whole lives. Their bodies grow weak and vulnerable to disease, but they have nothing to compare their experience to."
Slavery Still Exists: Photographs of human trafficking and enslavement around the world (The Atlantic)