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.
Floyd Abrams
If we attempt to block the development of new technology, we effectively have ensured that the most responsible parties will not develop them. Ralph Merkle
Racism may be as systemic as it always was. It is the great problem of America. It's the one stumbling block that I don't believe was ever smoothed over. Robert Guillaume