nbc 5 nightly update August 20, 2021 7:10 pm Nightly Update: Mask Mandate, Lake Search, Blue Angels Soar The top digital stories you need to know for Friday, Aug. 20. Local 2:13 Mayor proposes to relocate migrants from downtown shelter to Chicago's South Side 0:47 Surveillance video shows armed thieves storm West Town bar 2:11 Dozens arrested at pro-Palestinian demonstration on Art Institute of Chicago campus 2:13 Pro-Israel, pro-Palestinian demonstrators rally on University of Chicago campus 14:21 Happy to Report: Your dose of good news for the week