1819:Allan Pinkerton is born

Fabled crime fighter Allan Pinkerton, who was involved in one of the bloodiest incidents in economic history, was born on this day in Glasgow, Scotland. Pinkerton founded a detective agency in Chicago that originally gained fame for solving a series of train robberies and later became known for helping management break strikes by the new labor unions. During the summer of 1892, his distaste for unions led Pinkerton to lend a hand to a fellow Scot, Andrew Carnegie. Tired of working in extreme heat for long hours and little pay, the workers at Carnegie's Homestead plant in Pennsylvania had threatened to strike. In response, Carnegie's partner slashed wages and erected a wall around the plant, effectively forcing a walk-off. Replacement workers were hired and Pinkerton's detectives were enlisted to ensure the workers safe passage to the plant. However, the appearance of Pinkerton's men led to violence, as the strikers and detectives clashed. Nine detectives died and nineteen of the striking workers were eventually hanged for crimes related to the incident.
-source: www.history.com