China blocks internet sites, services ahead of Tiananmen anniversary

The Chinese government is trying toblock access to social media,photo-sharing and many other websites in an apparent effort to control discussion about the Tiananmen Square pro-democracy protests, bloodilysuppressed by Chinese soldiers 20 years ago.

The blockson Tuesday included Twitter, some blogs, Hotmail, Microsoft's new search engine Bingand Flickr, media reports said. YouTube has been blocked since March.

As many as 6,000 message boards at colleges were blocked in late May, the Information Center for Human Rights and Democracy said in a report dated May 26, but covered by Western media Tuesday. It's based in Hong Kong.

China has repeatedly tried to block electronic access to material it deems illegal under its Great Firewall policy. It banscertain news about Tibet, democracy, anti-government or anti-Communist party activities andsexual content.

The Tiananmen demonstration, where students and some politicians sought more democracy, was crushed by troops and tanks in the square in Beijing on June 4, 1989. Many were killed, but the precisetoll has never been revealed. The government calls the demonstrations"counterrevolutionary" riots.

If Chinese internet users enter "4 June" in the photo section of Baidu, the countrys most popular search engine, they get a message saying: "the search does not comply with laws, regulations and policies," Reporters without Borders said in a news release Tuesday.

Twitter messages were encouraging people to wear white, the colour of mourning, until they were suddenly blocked Tuesday, the Globe and Mail reported.

However, some users have found workarounds that enable them to continueusing Twitter, email and websites.

For example, writer williamlong complained on twitter about the block after it was launched, the Guardian newspaper said. "We netizens were beaten by a 'combination blow.' So many famous websites are not accessible now," williamlong wrote.

"Despite Chinas heavy-handed internet filtration regime, the large quantity of proxy software allows end-users to circumvent the government-imposed firewall," a recent blog posting on the OpenNet Initiative said. The initiative,rooted in Harvard University, Oxford University, Cambridge University and the Citizen Lab at the University of Toronto, monitors political filtering.