In years past, the National Mall is normally filled with tens of thousands of people attending a presidential inauguration. But those crowds were missing for the swearing in of Joe Biden and Kamala Harris, amid the pandemic and a massive security apparatus in place after violent insurrectionists stormed the U.S. Capitol. Amna Nawaz and Nick Schifrin join Judy Woodruff to discuss. PBS NewsHour is supported by - https://www.pbs.org/newshour/about/funders