A video of a group of white teenagers taunting a Native American man at Friday’s Indigenous Peoples March in Washington, DC, sent shockwaves across social media as it went viral Saturday afternoon. The clip shows a young man wearing a “Make America Great Again” hat smirking at Nathan Phillips, an Omaha elder and Vietnam veteran, near the steps of the Lincoln Memorial. The scene enraged those who saw the exchange as an example of the intolerance perpetuated by President Trump.