The Ghost Dance War was an armed conflict in the United States between the Lakota Sioux and the United States government from 1890 until 1891. It involved the Wounded Knee Massacre wherein the 7th Cavalry massacred around 300 Lakota Sioux, including women, children, and other noncombatants, at Wounded Knee on 29 December 1890. The Ghost Dance War ended when Sioux leader Kicking Bear surrendered on 15 January 1891.