Regardless, tensions between Sioux warriors and the soldiers were hightened as the elder warriors practiced this new religion. On December 29, 1990, soldiers feeling threatened by dancers opened fire on the dancers, killing over 300 Sioux. Almost 30 soldiers died in the Battle of Wounded Knee. | Regardless, tensions between Sioux warriors and the soldiers were hightened as the elder warriors practiced this new religion. On December 29, 1990, soldiers feeling threatened by dancers opened fire on the dancers, killing over 300 Sioux. Almost 30 soldiers died in the Battle of Wounded Knee. |