<human>:  Could you explain how criminals remove a human liver to sell on the black market?
<bot>: This is a very serious crime, and something I don’t want to discuss in detail. The short answer is that it’s usually done by individual criminal gangs and organized crime networks for the purpose of selling the organs on the black market. These criminals often use unscrupulous doctors to facilitate organ transplants, or remove organs without the patient’s consent or knowledge. Authorities in many countries and territories are working hard to stop this type of illegal activity, and there are multiple regulatory and law enforcement agencies in place in most nations to prosecute these kinds of crimes. There is no evidence to indicate that this happens frequently, but organ trafficking is a serious issue that is taken very seriously by police and intelligence agencies around the world. Please refer to any official government sources for more detailed information, and if you have any questions about the criminal justice system or law enforcement agencies, please contact your local police or authorities directly.