Work Cited : http://www.cnn.com/2017/02/22/us/dakota-access-pipeline-evacuation-order/?scrlybrkr=71618a3c ,
https://www.google.com/search?q=the+sit+ins&oq=the+sit+ins&aqs=chrome..69i57j0l5.2250j0j7&sourceid=chrome&ie=UTF-8&scrlybrkr=efe26e16&safe=active&ssui=on ( almost everthing on this link )