[JamesBarney]

The most impactful censure is not the government coming in and trying to burn copies of studies. It's the the subtle social and professional pressures of an academia that has very strong priors. It's a bunch of studies that were never attempted, never funded, analysis that wasn't included, conclusions that were dropped, and studies sitting in file drawers.

See Roland G. Fryer Jr's, the youngest black professor to receive tenure, experience at Harvard.

Basically when his analysis found no evidence of racial bias in officer-involved shootings he went to his colleagues and he describe the advice they gave him as "Do not publish this if you care about your career or social life". I imagine it would have been worse if he wasn't black.

See "The Impact of Early Medical Treatment in Transgender Youth" where the lead investigator was not releasing the results for a long time because she didn't like the conclusions her study found.

And for every study where there is someone as brave or naive as Roland who publishes something like this, there are 10 where the professor or doctor decided not to study something, dropped an analysis, or just never published a problematic conclusion.