The protest followed Self_motion the failure of an effort of the Oglala Sioux Civil Rights Organization ( OSCRO ) to impeach Change_of_leadership tribal president Richard Wilson , whom they accused Judgment_communication of corruption and abuse Committing_crime of opponents .

More than 60 opponents of the tribal government died Death violently during those years , including Pedro Bissonette , director of the Oglala Sioux Civil Rights Organization ( OSCRO ) .

The Port Neal fertilizer plant explosion Attack occurred Coming_to_be on December 13 , 1994 in the ammonium nitrate plant at the Terra International , Inc. , Port Neal Complex , 16 miles south of Sioux City , Iowa , United States .

The Hayfield Fight on August 1 , 1867 was an engagement Hostile_encounter of Red Cloud 's War near Fort C. F. Smith , Montana , between 21 soldiers of the U.S. Army , a hay-cutting crew of nine civilians , and several hundred Native Americans , mostly Cheyenne and Arapaho , with some Lakota Sioux .

The Dakota Sioux , and later the Ojibwe , tribes hunted Killing and gathered Come_together pelts trading with French , British , and later American traders at Grand Portage , Mendota , and other sites .