How an assassin, a dead President, and Theodore Roosevelt defined the Progressive Era.When President McKinley was murdered at the Pan-American Exposition in Buffalo, New York on September 6, 1901, Americans were bereaved and frightened. Rumor ran rampant: A wild-eyed foreign anarchist with an unpronounceable name had killed the Commander-in-Chief. Eric Rauchway's brilliant Murdering McKinley re-creates Leon Czolgosz's hastily conducted trial and then traverses America as Dr. Vernon Briggs, a Boston alienist, sets out to discover why Czolgosz rose up to kill his President. While uncovering the answer that eluded Briggs and setting the historical record straight about Czolgosz, Rauchway also provides the finest portrait yet of Theodore Roosevelt at the moment of his sudden ascension to the White House.