FRANKFORT, Ky. — Students at a Kentucky Catholic school who were involved in a video showing them mocking Native Americans outside the Lincoln Memorial after a Washington rally could potentially face expulsion, according to the diocese. In a joint statement , the Roman Catholic Diocese of Covington and Covington Catholic High School apologized and said they are investigating and will take “appropriate action, up to and including expulsion.” The Indigenous Peoples March in Washington on Friday coincided with the March for Life, which drew thousands of anti-abortion protesters, including a group from Covington Catholic High School in Park Hills, Ky. Videos circulating online show a youth staring at and standing extremely close to Nathan Phillips, a 64-year-old Native American man singing and playing a drum.