The three most profitable “businesses” in the world are deeply damaging to human beings—sale of arms, sale of drugs and sale of human beings. From being the third most profitable, trafficking in humans has become the second most profitable industry, since (unlike drugs) a human being can be sold again and again. Think of girls promised jobs in our cities, then gang-raped and sold to brothels where they meet violence and degradation every day. Often they were led there by people they knew and trusted, including some family members.
A recent Vatican document addresses this issue.