# McKinley Assassination President [[William McKinley]] was shot on September 6, 1901, by anarchist Leon Czolgosz at the Pan-American Exposition in Buffalo, New York, and died on September 14. His death elevated Vice President [[Theodore Roosevelt]] to the presidency, opening the [[Progressive Era]]. The assassination fueled a wave of anti-anarchist and anti-immigrant sentiment, contributing to restrictive measures like the Anarchist Exclusion Act of 1903. > [!note] Stub > Minimum-viable page created to resolve inbound wikilinks. Expand with the anarchist-panic aftermath and the Roosevelt succession.