On the recordSeptember 15, 2009
But when a radical fringe element of demonstrators and others begin to attack the President of the United States of America as an animal, or as a reincarnation of Adolf Hitler, or when they wave signs in the air that said we should have buried Obama with Kennedy, those kind of things are beyond the bounds of the way presidents have ever been accepted even with people who disagree.
Source
transcripts.cnn.com
