Fannie Sellins was an American union organizer who was murdered by deputies policing a picket line on this day in 1919, while working for the United Mine Workers of America (UMWA) in Pennsylvania.

Sellins came to the attention of United Mine Workers of America (UMWA) after helping organize a local chapter of the International Ladies' Garment Workers' Union in St. Louis, negotiating a worker lockout at a garment factory. The UMWA hired Sellins and, in 1919, sent her to the Allegheny River Valley district to direct picketing by striking miners at Allegheny Coal and Coke Company.

On August 26th, she witnessed guards attacking Joseph Starzeleski, a picketing miner who was being beaten to death. When Sellins intervened, deputies shot and killed her with four bullets and used a cudgel to fracture her skull.

Others said that she was attempting to protect miners' children that were on scene. Three deputies were indicted for the killings, but a 1923 trial ended in acquittal for the two men accused of her murder.