In 1735, Editor John Peter Zenger was acquitted in New York of libelling the British governor by criticizing his conduct in office.
Citation:
Richert, Lucas Paul. "Zenger acquitted of libel".
The Literary Encyclopedia. First published 01 February 2009
[http://www.litencyc.com/php/stopics.php?rec=true&UID=5911, accessed 26 May 2013.]