Kenneth S. Stern is an American defense attorney and an author. He is executive director of the Justus & Karin Rosenberg Foundation. From 1989 to 2014 he was director on antisemitism, hate studies and extremism for the American Jewish Committee. In 2000, Stern was a special advisor to the defense in the David Irving v. Penguin Books and Deborah Lipstadt trial.
(Taken from Wikipedia)