Slavery will often hide in one form or another. In China it is often the duty of a young girl to enslave herself in sweat-box factories in order to send a bit of money home. She may work long hours and suffer much abuse, while the product that she makes will sell in the western world under a "brand name" at many times its worth because some over the hill sports star attaches his endorsement for a million bucks.
In parts of the Arab world such as Saudi Arabia women are born, live, and die in cultural slavery, always the property of the father or the husband.
In Canada young women and often underage girls are sold daily on the street by pimps that have made them slaves by addicting them and beating them. If the pimp is arrested he faces a minor charge and is back on the street doing the same the next day. The girl will welcome him back because by then she is desperate for her next fix.
Around and around it goes but you don't have to look on a cotton plantation to find slavery. In much of the southern USA though, descendants of the plantation slaves still suffer the bondage of poverty and discrimination. George Washington and Thomas Jefferson spoke eloquently about equality and freedom while owning slaves. Has their two faced attitude ever really changed?
As long as greed exists exploitation will follow. Slavery is exploitation at its worst!