Strikes challenged American industry throughout the late nineteenth and early twentieth centuries. Workers seeking higher wages, shorter hours, and safer working conditions had struck throughout the antebellum era, but organized unions were fleeting and transitory. The Civil War and Reconstruction seemed to briefly distract the nation from the plight of labor, but the failure of the Great Railroad Strike of 1877 convinced workers of the need to organize. Union memberships began to climb. The Knights of Labor enjoyed considerable success in the early 1880s, due in part to its efforts to unite skilled and unskilled workers. The Knights welcomed all laborers, including women (they only barred lawyers, bankers, and liquor dealers). By 1886, the Knights had over seven hundred thousand members. The Knights envisioned a cooperative producer-centered society that rewarded labor, not capital, but, despite their sweeping vision, the Knights focused on practical gains that could be won through the organization of workers into local unions.
It's amazing how long the strikes continued. It shows good insite on how long unions have been around.