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Assassination of US President William McKinley, 1901
Leon Czolgosz, a 28-year-old American of Polish descent assassinated U.S. President William McKinley in 1901.
"After McKinley died, the American media blamed Polish immigrants. They were outsiders, foreigners, with a suspicious religion - Catholicism - and strange last names," wrote Al Jazeera columnist Sarah Kendzior. "At a time when Eastern European immigrants were treated as inferior, Polish-Americans feared they would be punished as a group for the terrible actions of an individual. 'We feel the pain which this sad occurrence caused, not only in America, but throughout the whole world. All people are mourning, and it is caused by a maniac who is of our nationality,' a Polish-American newspaper wrote in an anguished editorial.'