In this Wednesday, May 28, 2014 photo, a police van passes by a visitor near a giant electronic screen showing a Chinese government propaganda song lyrics that read "Sing a song to communist party" on... more 
In this Wednesday, May 28, 2014 photo, a police van passes by a visitor near a giant electronic screen showing a Chinese government propaganda song lyrics that read "Sing a song to communist party" on Tiananmen Square in Beijing. A quarter century after the Tiananmen Square pro-democracy movement’s suppression, China’s communist authorities oversee a raft of measures for muzzling dissent and preventing protests. They range from the sophisticated - extensive monitoring of online debate and control over media - to the relatively simple - routine harassment of government critics and maintenance of a massive domestic security force. (AP Photo/Andy Wong) less 
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Associated Press | Photo By Andy Wong
Sat, May 31, 2014 4:18 AM EDT