You do not have to incriminate yourself. But once you assert your innocence, and once you say you didn't do anything wrong, you can't then use the Fifth Amendment to say, 'I'm not answering questions.'
The Incredible Adventures of Rush Revere: Rush Revere and the Brave Pilgrims; Rush Revere and the First Patriots; Rush Revere and the American ... Banner; Rush Revere and the Presidency