Edward R. Murrow, “A Report on Senator Joseph R. McCarthy,” March 9, 1954:
We will not be driven by fear into an age of unreason; if we dig deep in our history and our doctrine and remember that we are not decended from fearful men – not from men who feared to write, to speak, to associate and to defend causes that were, for the moment, unpopular.
Still holds true 50 years later.