The following episode was reported in the US Department of State's 2009 report on trafficking in persons:
When Julia was 8, a man took her and her sisters to a neighboring country and forced them to beg on the streets until their early teens, when he sold them into prostitution. Julia’s traffickers expected her to bring in a certain amount of money each day or face beatings. At 14, Julia ran away, eventually coming under the supervision of local authorities. They placed her in an orphanage where she was not allowed to go to school due to her undocumented status. After a few months, Julia ran away from the orphanage and became involved with a pimp who prostituted her to local men and tourists. Recently, Julia was arrested on narcotics charges. She will likely spend the next two years in a juvenile prison, where she will finally learn to read and write.
If you think this is bad, there are two million more children just like her in the world; 300,000 of them are in the United States.