sentences:  During the 1890s, Walker became active in politics.Walker's activism was heightened by an incident in June 1897 in which residents of Urbana, Ohio, formed a lynch mob, removed a black man named "Click" Mitchell from the town jail, and publicly killed him by hanging.Believing that Ohio's Republican Governor Asa Bushnell had failed to conduct an appropriate investigation into the lynching, Walker and other African Americans in Ohio left the Republican Party and formed the Negro Protective Party.