I listen to Democracy NOW every morning as the first thing I do every morning. They offer a refreshing and non-mainstream view of what's going on in the world.
This morning they had a long interview with Dr. James Hansen, a NASA scientist with a long track record of warning about climate change and global warming. He has a strong body of evidence and research in this -- but also has a strong body of evidence and questions about political interference with Science and political control over what he and other scientists are allowed to say in public.
The interview also featured Mark Bowen, author of “Censoring Science: Inside the Political Attack on Dr. James Hansen and the Truth of Global Warming.”
It's a powerful interview .. the thing I most strongly take from it is a question over the ability of the citizenry to be informed. One root of Democracy is an Informed Citizenry, yes? However if Scientists, whose role is largly to inform the citizenry, is only allowed to say things the administration says they can say, then the administration is in the role of controlling the depth to which the citizens (us) are informed.
Clearly this can be used to twist society in awful ways.
I don't know enough about Dr. Hansen to know whether this has happened for him. However they recounted a meeting by the AAAS where an adjunct meeting of government scientists was held, and dozens of government scientists told stories of political operatives interfering with their publications and public statements. And they claimed that under the current Bush Administration that the amount of interference was much greater than under previous ones.