The concept of Academic Freedom at universities (and, indeed, within society at large--including [especially?] the media) disappeared long ago, washed away in the flood of political correctness and corporate funding.  Some issues can't be discussed at all (e.g. the holocaust, ethnic tendencies, etc.).  Some issues can be discussed, but only from a certain perspective designed to "inform" the "correct" position (i.e. missing aboriginal men, but only to provide background for the more "legitimate" inquiry into missing aboriginal women).  Some issues can't be discussed lest they offend corporate sponsors (e.g. climate change at universities receiving substantial funding from fossil fuel companies).  And some issues can't be discussed just because they might make someone feel bad about themselves (even if they should).  In the Soviet Union, ideas were suppressed by government.  In the West, they are equally suppressed, but by the larger body of society itself.