A video that has been widely shared on social media has sparked outrage against a northern Kentucky High School.

Social media posts from people at the scene say the Native American man was participating in the Indigenous Peoples March.

Posts on Covington Catholic’s Instagram page show students from the school were in Washington, DC at the time participating in the March for Life. The school’s social media platforms have since been restricted.

Secretary of State Alison Lundergan Grimes voiced her disapproval of the behavior in a tweet saying, “As we prepare to celebrate the life of Dr. Martin Luther King Jr., his work to ensure equality for all through nonviolent civil disobedience sadly still applies today. Kentucky, we are better than this.”

She has also released a statement calling on Covington Catholic High School to denounce the incident.

The high school and the Diocese of Covington said the matter is under investigation. They said appropriate actions would be taken against those in the video up to (and including) expulsion.