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.
“There is no such thing as a person that nothing has happened to, and each person's story is as different as his fingertips.”
“Most fear stems from sin; to limit one's sins, one must assuredly limit one's fear, thereby bringing more peace to one's spirit.”