Watch Native American activist promise to forgive GOP: ‘Custer already died for your sins’

MSNBC anchor Rachel Maddow devoted the first half of her show on Monday to examine the pattern of Republicans seeking to suppress the vote of minorities in America, focusing on GOP efforts to deny the vote to Native Americans living on reservations in North Dakota.

North Dakota Republicans successfully changed the law to deny voting rights to anyone without a street address -- based on the knowledge that reservations rely upon Post Office boxes.

Earlier in the show, Maddow described the GOP scheme as a "heat-seeking missile to nuke the Native American vote" while Sen. Heidi Heitkamp (D-ND) is relying upon her past support on reservations to turn out during her reelection campaign.

O.J. Semans, executive director of Four Directions, a Native American voting rights organization, joined Maddow to discuss the developments.

At the end of the interview, Semans had a "drop the mic" moment.

"And one of the things I will say is Standing Rock will vote," he promised.

"And we will forgive the state legislature and the North Dakota Secretary of State for their sins, because Custer already died for their sins," he said.

In 1876, Lt. Col. George Armstrong Custer was killed while commanding U.S. cavalry forces at the Battle of the Little Big Horn in Montana.

During the battle, over 270 men under Custer were killed in action by a united Native American force of 2,500 members, from multiple tribes.

The battle occurred after Custer violated the U.S. Senate-ratified Ft. Laramie Treaty of 1868.

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