A crime that is similar to human trafficking is organ trafficking. This is when people buy and sell their organs, such as the kidney. Since people can live with only one kidney, many people who are poor sell their kidney on the black market to make money. And since it is very hard to get a kidney operation at a real hospital, many rich people who need the kidney buy it.
Organ trafficking is a big worry for doctors. Many people have operations to take out their organs in unsafe places. Also, it is easy for people to cheat the seller of the organ. Newspapers has said many do not get paid after selling the organ. Since the kidney is already out of the body, the people cannot do anything about it.