Some Catholic school kids wearing MAGA hats attended a pro-life march in Washington. For some reason, they decided to harass the Indigenous Peoples March. Some of the students were shouting "Build the wall" at the men, and one kid walked up to smirk in the veteran's face.
The elderly veteran in the video is Nathan Phillips. He is a Vietnam veteran who holds an annual ceremony honoring Native American veterans at the Arlington National Cemetery. He is also the former director of the Native Youth Alliance. After the incident he said, "I wish they put their energy into making this country really great, helping those that are hungry.”
The Catholic school that these boys attend has released a statement saying that the disrespect and lack of dignity that the students showed is contrary to their teachings, and that they were considering punishments up to expulsion.
https://www.nytimes.com/2019/01/19/us/covington-catholic-high-school-nathan-phillips.html