<human>:  When did the Wounded Knee Massacre happen?
<bot>: The Wounded Knee Massacre took place on December 29, 1890. It happened during the American Indian Wars, which were a series of conflicts between the United States government and the Native American population. The U.S. Army was sent to Wounded Knee to force the Native Americans to leave the area. During the massacre, the U.S. Army killed at least 300 Native Americans, including women and children. The Wounded Knee Massacre is one of the most notorious events in the history of the American Indian Wars.