The Santa María School massacre (Spanish: Matanza de la Escuela Santa María de Iquique) was a massacre of striking workers, mostly saltpeter works (nitrate) miners, along with their wives and children, committed by the Chilean Army in Iquique, Chile, on December 21, 1907. The number of victims is undetermined but is estimated to be over 2,000. The massacre occurred during the peak of the nitrate mining era, which coincided with the Parliamentary Period in Chilean political history (1891–1925). With the massacre and an ensuing reign of terror, not only was the strike broken, but the workers' movement was thrown into limbo for over a decade.
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