<prompt> Qedela umusho olandelayo: UMatthew Derbyshire Mann July 12, 1845 March 2, 1921 wayengudokotela wezifo zabesifazane waseMelika futhi engomunye wodokotela abahlinzayo owasebenza uMongameli uWilliam McKinley ngemuva  <response>: wadutshulwa emagcekeni ePan American Exposition ngoSeptember 6, 1901, eBuffalo, eNew York, yi - anarchist Leon F. Czolgosz. 