Want to learn how an international slavery syndicate is brought down? See what undercover police work requires, and what it can accomplish? Here you go:

CNN is reporting on a three-year long human trafficking case in the Catalonia region of Spain that tells you about all of that. Due to diligent, covert police work, hundreds of Chinese immigrants illegally brought to Spain will no longer be forced to spend their lives in fetid, cramped sweatshops.

The video footage tells the tale, so best to let you get to it: