May 17, 2021 6:40 pm CDC Revising Guidance on Masks a Political Move? NBC Bay Area political analyst Larry Gerston examines the CDC updating its mask guidance. US & World Videos 2:00 ‘Kayak-tivists' take Chevron protest out onto the Bay by Richmond 2:29 San Jose celebrates Cinco de Mayo with a pair of parades and festivals 0:22 Police investigating double stabbing in San Jose 1:41 ‘The Mummy' turns 25: Remembering the Brendan Fraser classic 1:15 Anna Nicole Smith's look-alike daughter Dannielynn Birkhead attends 2024 Kentucky Derby