The Knights of St. Crispin union is formed at a secret meeting in Milwaukee. It grew to 50,000 members before being crushed by employers later that year - 1867
Two die, 20 are injured in “Bloody Tuesday” as strikebreakers attempt to run San Francisco streetcars during a strike by operators (photo). The strike was declared lost in 1908 after many more deaths, including several in scab-operated streetcar accidents - 1907
Philadelphia’s longest transit strike ends after 44 days. A key issue in the fight was the hiring and use of part-timers - 1977
Labor history courtesy Today In Labor History.