Sandmann and his schoolmates crossed paths with Nathan Phillips and other Native Americans at the end of the Indigenous Peoples March as they performed the “American Indian Movement” song. In the video that has gone viral, they were filmed clapping with smiles plastered on their faces as they mockingly sang and danced along to the song. A smirking Sandmann stands face-to-face with Vietnam War veteran Phillips – a Nebraska native of the Omaha tribe who now lives in Michigan — blocking his path and grinning in his face as his friends looked on, laughed and filmed him.