Overnight, at least 20 people were arrested in Washington, D.C., after violence broke out between pro- and anti-Trump protesters. Social media amplified the unrest, and it caught the attention of President Trump, who denounced the “human radical left garbage.” He also urged local officials to “do your job and don’t hold back.” NBC’s Kelly O’Donnell reports for Sunday TODAY from the White House. » Subscribe to TODAY: http://on.today.com/SubscribeToTODAY » Watch the latest from TODAY: http://bit.ly/LatestTODAY About: TODAY brings you the latest headlines and expert tips on money, health and parenting. We wake up every morning to give you and your family all you need to start your day. If it matters to you, it matters to us. We are in the people business. Subscribe to our channel for exclusive TODAY archival footage & our original web series. Connect with TODAY Online! Visit TODAY's Website: http://on.today.com/ReadTODAY Find TODAY on Facebook: http://on.today.com/LikeTODAY Follow TODAY on Twitter: http://on.today.com/FollowTODAY Follow TODAY on Instagram: http://on.today.com/InstaTODAY Follow TODAY on Pinterest: http://on.today.com/PinTODAY #PresidentTrump #SundayTODAY As Protesters Clash At Million MAGA March, Trump Attacks ‘Human Radical Left Garbage’ | Sunday TODAY