On this day in 1935, two people were killed and twenty-eight injured in a clash between ~5,000 workers and Minneapolis police near the working class neighborhood Seward's Hub of Hell at 26th Avenue and 26th Street. The violence took place in the context of labor strife, with both workers and capitalists organizing against each other, the latter forming the "Citizen's Alliance".

The owner of Flour City Ornamental Iron Works, Walter Tetzlaff, was an active member of the Citizen's Alliance. He was vehemently opposed to the unionization of his staff, who were being organized by the International Association of Machinists. Workers at Tetzlaff's factory went on strike he refused their demands for a minimum wage, the guarantee of an eight-hour day, and time-and-a half pay for overtime.

On September 11th, 1935, 300 pickets were outside the factory in the evening. More than 100 officers arrived on the scene in squad cars, motorcycles, and armored cars. Though there were 1,200 men working at the factory, by the end of the night 5,000 workers and nonworkers were facing off with police.

Police and protesters clashed, and the cops gassed and shot into the crowd. The clouds of gas were so thick that nearby bars had to close and streetcars refused to travel through it. By the end of the night, two people were killed and twenty-eight were injured.

Faced with the possibility of losing a lucrative government contract, Tetzlaff capitulated to the demands of a 40 hour work week, 25 cents per hour wage, and overtime pay to the workers, although he still refused to recognize the union.