A Kentucky Catholic school forced to apologize over this: A group of students - many wearing Make America Great Again hats - were filmed surrounding and mocking a Native American Vietnam veteran singing and playing the drum.
The video went viral, sparking widespread outrage.
Some of the students were from the all-male Covington Catholic High School outside Cincinatti.
They were in Washington for an anti-abortion rally, which coincided with the Indigenous Peoples March.
One teen in particular can be seen standing in front of Nebraska Omaha tribe elder, Nathan Phillips, smirking into his face.
Others cheered and chanted a Trump-inspired slogan, "build that wall." Phillips later shared his experience of the confrontation.
(SOUNDBITE) (English) NATHAN PHILLIPS, SAYING: "Build that wall.
Build that wall.
This is indigenous land.
We're not supposed to have walls here.
We never did for a millennium, before anyone else came here, we never had walls.
We never had a prison.
We always took care of our elders.
We took care of our children.
We always provided for them.
We taught them right from wrong.
I wish I could see the energy of the young mass of young men, put that energy into making this country really, really great, helping those that are hungry." Phillips was one of the leaders of the Standing Rock protests against an oil pipeline on native land.
The archdiocese of Covington and the high school released a statement Saturday condemning the students' actions.
Saying quote: "The matter is being investigated and we will take appropriate action, up to and including expulsion."