Young-Earth Creationists and cdesign proponentsists regularly accuse the academy and the world of censoring them (whereas the truth of the matter is that they are ignored or passed over for doing weak science and in most cases simply not doing science at all).
If you want to see censorship and exclusion in action, you have to look at what creationists themselves do.
The latest (rather amusing) example is covered on a number of blogs: Pharyngula (more than once), Amused Muse (twice), ERV, Further Thoughts, The Austringer, The Bad Idea Blog, Hyper-Textual Ontology, Open Parachute, Sporadic Maunderings (twice), Stranger Fruit, Rev. BigDumbChimp, TeacherNinja, Matt’s Notepad (twice), Conspiracy Factory (twice), Higgaion (twice, and oh the irony of the second one), Monkey Trials (three times), Bene Diction Blogs On (twice), Science Reporting, Sandwalk (multiple posts) and Thoughts in a Haystack (twice, the first attributing to me prophetic ability, but one doesn’t need prophetic ability to talk about things that are ongoing characteristics of a movement). The Panda’s Thumb has multiple posts on the subject. Greg Laden has a round up. You can also see what the other side(s) think(s).
Richard Dawkins, who was allowed into the showing of Expelled!, has posted a review.