The 1973 Siege at Wounded Knee is the longest “civil unrest” in the history of the US Marshal Service. For 71 days, the American Indian Movement (AIM) and members of the Oglala Lakota (Sioux) nation were under siege in a violent standoff with the FBI and US Marshals equipped with high powered rifles and armored personnel carriers. Two people were killed, over two dozen wounded. At stake, sovereignty and self-determination guaranteed through treaty rights.
Source: Wounded Knee and Today’s Fight for Treaty Rights | Portside