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 .
The 25th President of the United States , William McKinley , was assassinated on September 6 , 1901 , inside the Temple of Music on the grounds of the Pan-American Exposition in Buffalo , New York .