New concerns over large gatherings as U.S. coronavirus death toll tops 150,000, Los Angeles Mayor Garcetti on fighting coronavirus in the nations second largest city, and a New York EMS captains warning from the pandemic front lines.Watch NBC Nightly News With Lester Holt at 6:30 p.m. ET 5:30 p.m. CT (or check your local listings).00:00 Intro01:11 New Distancing Concerns As U.S. Death Toll Tops 150,00003:25 Report: More Restrictions Urges In 21 Covid-19 Red Zone States04:13 One-On-One With L.A. Mayor Facing Covid-19 Emergency07:07 First Responders Issue Urgent Warning From The Front Lines09:31 Trump Under Fire For Retweeting Covid-19 Misinformation11:55 AG. Barr Clashes With Democrats In Fiery House Showdown13:55 Inside Clashes Between Protesters, Federal Agents15:52 Teachers' Union Authorizes Members To Strike If Safety Standards Not Met17:57 Deadly Great White Shark Attack Off Maine Coast