Occurred on December 29, 1890, near Wounded Knee Creek on the Lakota Pine Ridge Indian Reservation in the U.S. state of South Dakota.
The previous day, a detachment of the U.S. 7th Cavalry Regiment commanded by Major Samuel M. Whitside intercepted Spotted Elk’s band of Miniconjou Lakota and 38 Hunkpapa Lakota near Porcupine Butte and escorted them 5 miles (8.0 km) westward to Wounded Knee Creek, where they made camp. The remainder of the 7th Cavalry Regiment, led by Colonel James W. Forsyth, arrived and surrounded the encampment. The regiment was supported by a battery of four Hotchkiss mountain guns.
On the morning of December 29, the U.S. Cavalry troops went into the camp to disarm the Lakota. One version of events claims that during the process of disarming the Lakota, a deaf tribesman named Black Coyote was reluctant to give up his rifle, claiming he had paid a lot for it. Simultaneously, an old man was performing a ritual called the Ghost Dance. Black Coyote’s rifle went off at that point, and the U.S. army began shooting at the Native Americans. The disarmed Lakota warriors did their best to fight back.
By the time the massacre was over, more than 150-300 men, women, and children of the Lakota had been killed and 51 were wounded (4 men and 47 women and children, some of whom died later); some estimates placed the number of dead at 300.