Censorship will always exist (and in some cases it needs to be used), but in the Seventh Art, for example, it has to be fought with more force because this field always tends to be very diverse.
Well... Of course, there needs to be a "filter" in the middle of it all, but who really has the right and the knowledge to do it properly?
True, there will always be the "powers-that-be" dictating what should and should not be allowed. An impossible source of censorship to ever be eliminated.