Editing Knights of Labor (section)

=== Haymarket Riot ===
The labor movement, including those in the Knights of Labor, were rallying for an eight-hour workday and protesting with their slogan: "Eight Hours for Work, Eight Hours for Rest, Eight Hours for What We Will." Through Eight Hour rallies and legislative lobbying, labor leaders came into direct conflict with employers, who neither accepted unions nor believed that governments should intervene on workers' behalf. During an Eight Hour campaign in Chicago in 1886, a conflict between organized laborers and employers turned violent. By the mid-1880s, Chicago was the center of immigrant and working-class organizing, with a wide array of labor organizations. Demands for the eight-hour workday were at the heart of a strike against one of Chicago's most powerful employers, the McCormick Harvesting Machine Company, which refused to bargain with the union.<ref name=":0" />

While workingmen had gathered to strike against the plant, some of them had drawn fire from authorities. City police and private guards had injured and killed some of the strikers. Which prompted responses from a bigger working class, which included anarchists Albert Parsons, Michael Schwab, August Spies, Adolph Fischer, and labor organizer Oscar Neebe. On May 4, they organized a protest in Chicago's Haymarket Square. After the main speakers, Parson and Spies, left the platform, someone from the crowd threw a bomb into a group of police standing in the square, which left seven police dead, and sixty protesters from the crowd injured. Afterwards, the eight anarchists were arrested and seven of them were sentenced to death in a trial that focused on political beliefs, not the actions of the anarchists. Two of the condemned had their sentences commuted; but after Louis Lingg committed suicide in prison, the remaining four were executed.<ref name=":0" />

The Haymarket trial had two distinct effects on the labor movement: first, a nationwide campaign to round up anarchists and, second, a steep decline in the Knights of Labor's membership. Terence Powderly, the Knights president, disavowed the Haymarket eight, even as local trade unions and Knights assemblies around the country protested the arrests. Rapid growth of the labor union in the mid-1880s weakened the bonds that held it together, New Knights members had joined the organization in the wake of its victories over southwestern railroads, but without fully understanding or accepting the Knights' movement culture. While it would be over a decade before the Knights disbanded, these organizational weaknesses, and the strength of the new trade federation union, led to the Knights' decline.<ref name=":0">{{Cite book |last=Faue |first=Elizabeth |title=Rethinking the American Labor Movement |publisher=Routledge |year=2017 |isbn=9780415895835 |location=New York |pages=22–24 |language=en-us}}</ref>