...And some wonderful organizations (courtesy of Wiki pedia) that help people litigate against those who would try to impose Internet Censorship:
Web sites which fall foul of government censors in other countries are often re-hosted on a server in a country with less restrictions. Many websites which are forced to re-host their content do so on American servers and thus escape censorship while remaining available to their target audience. This is especially the case with neo-nazi and other sites promoting racial hatred, since these are prohibited in a number of European countries. Nevertheless the US Government has attempted to regulate certain acts and speech on the Internet (see US v. Baker).
The Electronic Frontier Foundation (EFF) is an organization dedicated to protecting freedom of speech on the Internet. The Open Net Initiative (ONI) is a collaboration between the Citizen Lab at the Munk Centre for International Studies, the University of Toronto, the Berkman Center for Internet & Society at Harvard Law School, the Advanced Network Research Group at the Cambridge Security Programme (University of Cambridge), and the Oxford Internet Institute, at Oxford University which aims to investigate, expose, and analyze Internet filtering and surveillance practices in a credible and non-partisan fashion.
Many countries utilize filtering software sold by US companies. The Chinese government has developed some of the most sophisticated forms of internet censorship in order to control or eliminate access to information on sensitive topics such as the Tiananmen Square protests of 1989, Falun Gong, Tibet, Taiwan, pornography or democracy. They have also enlisted the help of some American companies like Microsoft, who have subsequently been criticized by proponents of freedom of speech.