Workers in the late 19th century faced dangerous working conditions, long hours, and no benefits. They began organizing unions like the Knights of Labor to advocate for better treatment. Craft unions represented specific trades while industrial unions sought to represent all workers in an industry. Some unions like the IWW welcomed all races and genders. Major strikes in the 1870s-1890s turned violent as employers hired strikebreakers and the government intervened on their behalf, discouraging union membership. Nonetheless, women organizers like Mother Jones and Pauline Newman continued to lead important strikes to improve conditions.