A few commentators have noticed that the 'theory' of 'relativity' (in fact, it's a ragbag of claims, not a single theory) has been carefully protected and guarded. Note also that it's pretty much independent of all other physics - most physicists know nothing about it. Here's a comment by Ivor Catt
Although the principle of free communication of ideas is a basic tenet of the scientific community, there are numerous examples of their suppression. Professor Herbert Dingle, who wrote a book on relativity in the 1920s as well as a section on relativity for ENCYCLOPAEDIA BRITANNICA, and was the man chosen by the BBC to give the eulogy on Einstein when he died, developed doubts about the special theory of relativity around 1955. To his astonishment, he found that the scientific journals and institutions suddenly closed their pages and doors when he wanted to write or say something unorthodox; that is, heretical. A scientist might say, 'something that was incorrect'. He describes his experience in his book, SCIENCE AT THE CROSSROADS...
DIngle's book was published in 1972 - I have a small, rather tatty, paperback copy. The text is available online.
Bryan Wallace's Farce of Physics seems to have been first published in 1993; it's also online, and Wallace has an anti-relativity forum http://www.anti-relativity.com/forum although I can't honestly recommend it.
An earlier piece was What is wrong with relativity? by George Burniston Brown, published in March 1967 in the Bulletin of the Institute of Physics and Physical Society. There were a few follow-up letters; I may post details later if anyone's interested - I took the trouble to look up the journal.
It's interesting to see the inchoate and evasive replies made to critics of relativity, if replies ever are made, which is rare. All I'm pointing out here is that, since there's a supposed link between 'relativity' and 'e=mc squared' and 'nuclear bombs', it's likely that discussion has been, and will continue to be, discouraged by those in the know. I think for example Herman Bondi, then the official defence scientist of the British government, wrote an unsatisfactory short reply to G B Brown.