The Wall Street Journal reports several Western companies, including Cisco Systems, are poised to help build a massive new surveillance project in China—a citywide network of as many as 500,000 cameras in the city of Chongqing. Officials say the sophisticated video surveillance will prevent crime, but human rights advocates warn it could target political dissent. Cisco is expected to supply networking equipment that is essential to operating large and complicated surveillance systems. Human rights advocates say Chinese police have used surveillance footage to identify people in political protests. Jailed Chinese artist-activist Ai Weiwei, who was released last month, complained before he was apprehended in April that police were using cameras to monitor him.