Communist China blocks Twitter, Flickr, message boards — alternate link
— “Beijing tightens grip over dissident community ahead of Tiananmen event”
— “Chinese authorities blocked popular Web sites like Twitter and Flickr on Tuesday after forcing dissidents from Beijing in a clampdown ahead of the 20th anniversary of the Tiananmen Square pro-democracy protests.”
— “Exiled former student leader Chai Ling, meanwhile, issued a rare public statement before Thursday’s anniversary of the bloody crackdown, calling for the release of political prisoners, an independent investigation into the events and permission for former student leaders to return home.”
— “‘The current generation of leaders who bear no responsibility should have the courage to overturn the verdicts’ on the protests, said Chai, in a statement distributed by the Hong Kong-based Information Center for Human Rights and Democracy.”

Communist China blocking Twitter, websites: RSF
— “China blocked access to Twitter, Flickr and other websites Tuesday, two days ahead of the 20th anniversary of the Tiananmen Square crackdown, Reporters Without Borders (RSF) said, expressing ‘outrage’ at the move”
— “Reporters Without Borders is outraged by the blockage of a dozen websites such as Twitter, YouTube, Bing, Flickr, Opera, Live, WordPress and Blogger in China”

Twitter, Bing banned in Beijing

China begins internet ‘blackout’ ahead of Tiananmen anniversary