In the 1930s, William Randolph Hearst's media empire included 28 newspapers, a movie studio, a syndicated wire service, radio stations and 13 magazines. Nearly one in four American families read a Hearst publication. His newspapers were so influential that Adolf Hitler, Benito Mussolini and Winston Churchill all wrote for him. The first practitioner of what is now known as 'synergy,' Hearst used his media stronghold to achieve unprecedented political...