Wikimedia sites have, sporadically, been censored in various jurisdictions, including China and Iran.
- Government Requests for Censorship to Google and YouTube. A great map showing requests for takedowns from July through December 2009.
- WSJ article on Google and censorship in India
- 2007中国互联网舆情分析报告 (In Chinese) 2007 report about public opinion on Chinese Internet
- 中国防火长城—互联网审查的法律经济学(In Chinese) The Great Firewall of China
Perspective from the government
- 占领制高点—对新形势下提高舆论引导能力的思考 (In Chinese) Some thought from the officer in Propaganda Department News Bureau.
- What does China censor online? Visualization of China's great firewall.
- Blacklist, White List? China’s Internet Censors Spawn Confusion
- China Is Losing a War Over Internet