New from Standing Rock Sioux and Native American rights groups on threat to block thousands of Native Americans from voting in North Dakota in this year's election:

New from Standing Rock Sioux and Native American rights groups on threat to block thousands of Native Americans from voting in North Dakota in this year's election: pic.twitter.com/adN7h3jygZ

— Rachel Maddow MSNBC (@maddow) October 23, 2018