The Knights aided various strikes and boycotts, winning important actions against Union Pacific in 1884 and on the Wabash Railroad in 1885. But failure in the Missouri Pacific strike in 1886 and violence by strikers, including the Haymarket Square riot, led to disputes between the craft unionists and the advocates of all-inclusive unionism. With the additional problems of a autocratic structure, mismanagement, further unsuccessful strikes, and the emergence of the [American Federation of Labor]? (1886, led by [Samuel Gompers]?) the organization quickly shrank from its 1886 height. By 1890 membership was only 100,000, and in 1900 it was practically non-existent.
With the motto "an injury to one is the concern of all", the Knights of Labor attempted to further its idealistic aims - an 8-hour day, the abolition of child labor, equal pay, the elimination of private banks. The Knights were organized as both all-inclusive "general assemblies" and as "trade assemblies" consisting of workers within particular crafts. Women, black workers (after 1883), and employers were welcomed, and bankers, lawyers, gamblers, and stockholders excluded.
The organization has been associated with Freemasonary?, the KKK and strongly racist views.