1936 Pacific Coast maritime workers' strike
The 1936 Pacific Coast maritime workers' strike was a 99-day strike of sailors and longshore workers from October 1936 to February 1937 located on the West Coast of the United States. The strike involved over 37,000 workers and paralyzed the entire Pacific Coast shipping industry.
Source: Wikipedia — 1936 Pacific Coast maritime workers' strike (CC BY-SA 4.0)