Police investigating motive for mass shooting inside NYC office building

A New York City police officer and three civilians are dead after a gunman opened fire inside a high-rise corporate building in Manhattan last night. The suspected gunman died of a self-inflicted gunshot wound, authorities said. MSNBC's Marc Santia, NBC News' Tom Winter and former Senior Executive in the FBI Counterterrorism Division Christopher O’Leary join Ana Cabrera to discuss the latest updates. For more context and news coverage of the most important stories of our day click here: https://www.msnbc.com/ » Subscribe to MSNBC:    / msnbc   » Subscribe to MSNBC on TikTok   / msnbc   » Subscribe to MSNBC on Instagram   / msnbc   Download our new MSNBC app for the latest breaking news and daily headlines at a glance: https://www.msnbc.com/information/dow... Follow MSNBC Show Blogs MaddowBlog: https://www.msnbc.com/maddowblog MSNBC delivers breaking news, in-depth analysis of political headlines, commentary and informed perspectives. Find video clips and segments from The Rachel Maddow Show, The Briefing with Jen Psaki, Morning Joe, The Beat, Deadline: White House, The Weeknight, All In, The Last Word, The 11th Hour, and more. Connect with MSNBC Online Visit msnbc.com: https://www.msnbc.com/ Subscribe to the MSNBC Daily Newsletter: https://link.msnbc.com/join/5ck/msnbc... #NewYorkCity #Crime #Shooting