“The President referenced the Wounded Knee Massacre, one of the darkest and most tragic chapters in the history of the Sioux Nation, to mock Senator Warren,” Rosebud Sioux Tribe Chairman Rodney Bordeaux said in the NCAI statement. “On behalf of the Rosebud Sioux Tribe, I condemn President Trump’s racist and disrespectful tweet about this brutal incident, in which an estimated 300 unarmed men, women, and children were rounded up and slaughtered. President Trump should remember that the United States has broken and continues to dishonor the treaties of peace made with our nation and other tribal nations of this country, and he should apologize immediately to the people of the Rosebud Sioux Tribe and other Lakota, Dakota, and Nakota nations for his shameful and ignorant misstatement.”