There's plenty of evidence that our government wants to restrict the flow of information. For example: When people in Iran were tweeting during demonstrations, it was hailed as the savior of democracy: people getting together and using tools to rally against their oppressors. When Twitter is used at protests here, at home, they get arrested, and called terrorists.
That has nothing to do with the assertion that governments are encouraging private companies to restrict internet freedom. No number of examples of police forces overstepping their bounds is proof of an authoritarian conspiracy to censor the internet in the federal government.
http://uk.reuters.com/article/idUKTRE5965KD20091007
http://www.youtube.com/watch?v=2jhsmCMuwdg