World
China's police state goes global at surveillance conference

LIANYUNGANG, China — High-tech CCTV, super-accurate DNA-testing technology and facial tracking software: China is pushing its state-of-the-art surveillance and policing tactics abroad.

Delegates from law enforcement across the world descended this week on a port city in eastern China showcasing the work of dozens of local firms, several linked to repression in the northwestern region of Xinjiang.