Unfortunately, there is some basis for this comment. The frequency with which ideas that have been considered true are revised is too great to permit an unqualified negation of this allegation.
Concern is for what is true versus what is taught.
The present practice in many educational programs is to teach the general theory of evolution as the only valid concept of origins. While this is being done, dissenting creationists point out that their ideas, which they feel are no less speculative than evolutionary ones, are suppressed. This suppression is considered a breach of academic freedom. The reverse situation has also occurred. In 1925 the state of Tennessee passed a law forbidding the teaching of non-biblical views of the origin of man in public schools.