I would say that the Pentagon Papers case of 1971 - in which the government tried to block the The New York Times and The Washington Post that they obtained from a secret study of how we got involved in the war in Vietnam - that is probably the most important case.
Man is a means and not an end, and he is a means to economic or political ends which are not really ends in themselves but means to other ends which in their turn are means and so ad infinitum.