Slavery in Todays World?

The best definition of Slavery is from Kevin Bales of Free The Slaves:
 
Slavery is one person controlling another person using violence or the threat of violence, exploiting them economically and paying them nothing.
 
We often see terms like "slave like conditions", or see the word slavery mixed in with paid child labor, sweatshops or similar forms of labor abuses.  It is a mistake to confuse slavery with labor exploitation or other labor crimes.  If the victim is paid or can get away it is not slavery.
 

In modern day slavery, human beings are literally bought and sold as property on an international market, for amounts ranging from $80 to $5000 or more.  They have no control over their lives or their children's lives: where they live, what work they do (usually dirty, degrading or dangerous), their sexuality, or their health.  Being enslaved is extremely hazardous to human life and health - for example 25% of child slaves in India do not make it to adulthood, and another 22% are permanently disabled.
 
Sometimes slaves are kept captive with literal chains or bars.  In other cases threats of violence, or actual violence against enslaved people or their families keep them from running away.  Sometimes families toil as slaves for generations, to satisfy debts typically under $50, in a practice known as bonded labor.  These people do not even know that they are slaves - they have been told that the practice is legal and that they are legally and morally obligated to work as slaves until their 'debt' is repaid.  However, because of the trickery of the traffickers, the debt constantly accumulates.