Relevant excerpt:<p>"The Chinese government is building one of the world’s most sophisticated, high-tech systems to keep watch over its citizens, including surveillance cameras, facial-recognition technology and vast computers systems that comb through terabytes of data. Central to its efforts are the country’s biggest technology companies, which are openly acting as the government’s eyes and ears in cyberspace.<p>Companies including Alibaba Group Holding Ltd. , Tencent Holdings Ltd. and Baidu Inc., are required to help China’s government hunt down criminal suspects and silence political dissent. Their technology is also being used to create cities wired for surveillance.<p>This assistance is far more extensive than the help Western companies extend to their governments, and the requests are almost impossible to challenge, a Wall Street Journal examination of Chinese practices shows.<p>Unlike American companies, which often resist U.S. government requests for information, Chinese ones talk openly about working with authorities. Tencent Chief Executive Ma Huateng, also known as Pony Ma, and Alibaba founder Jack Ma both have voiced support for private companies working with the government on law enforcement and security issues.<p>“The political and legal system of the future is inseparable from the internet, inseparable from big data,” Alibaba’s Mr. Ma told a Communist Party commission overseeing law enforcement last year. He said technology will soon make it possible to predict security threats. “Bad guys won’t even be able to walk into the square,” he said.<p>In practice, China’s internet giants, which have benefited from trade policies shielding them from foreign competition, have little choice but to cooperate in a country where the Communist Party controls both the legal system and the right to function as a business."