In some western countries some government agencies and intelligence services withdraw information from the general public on the pretext of "national security" or "public safety".
eg. 1: The American National Institute of Standards and Technology NIST will not release some vital building 7 (third tower which was not hit by a plane that collapsed on 9/11 at free fall speed for 3.7 seconds which violates the 3rd law of motion unless resistance below is removed) collapse models because it "might jeopardize public safety" ref here paragraph 36
To what extend could you consider a government to be "democratic" when a non-elected ruling elite decides what is suitable to be shown to the public?
"The very word "secrecy" is repugnant in a free and open society; and we are as a people inherently and historically opposed to secret societies, to secret oaths and to secret proceedings..." J.F.K.