https://en.wikipedia.org/wiki/Assassination_of_William_McKinley



The 25th President of the United States, William McKinley, was shot and fatally wounded on September 6, 1901, inside the Temple of Music on the grounds of the Pan-American Exposition in Buffalo, New York. McKinley was shaking hands with the public when he was shot by Leon Czolgosz, an anarchist. The President died on September 14 from gangrene caused by the bullet wounds.

McKinley had been elected for a second term in 1900. He enjoyed meeting the public, and was reluctant to accept the security available to his office. The Secretary to the President, George B. Cortelyou, feared an assassination attempt would take place during a visit to the Temple of Music, and twice took it off the schedule. McKinley restored it each time.

Czolgosz had lost his job during the economic Panic of 1893 and turned to anarchism, a political philosophy whose adherents had recently killed foreign leaders. Regarding McKinley as a symbol of oppression, Czolgosz felt it was his duty as an anarchist to kill him. Unable to get near McKinley during the earlier part of the presidential visit, Czolgosz shot McKinley twice as the President reached to shake his hand in the reception line at the temple. One bullet grazed McKinley; the other entered his abdomen and was never found.
McKinley initially appeared to be recovering, but took a turn for the worse on September 13 as his wounds became gangrenous, and died early the next morning; Vice President Theodore Roosevelt succeeded him. After McKinley's murder, for which Czolgosz was put to death in the electric chair, the United States Congress passed legislation to officially charge the Secret Service with the responsibility for protecting the president.

</snip>