FILE - In this Jan. 21, 2006, file photo, Chinese lion dancers perform in Oakland's Chinatown in Oakland, Calif. Police are stepping up patrol and volunteers are increasing their street presence after several violent attacks on older Asians stoked fear in the San Francisco Bay Area's Chinatowns and subdued the celebratory mood leading up to Chinese New Year. (AP Photo/Paul Sakuma, File)

FILE - In this Jan. 31, 2020, file photo, a masked worker cleans a street in the Chinatown district in San Francisco. Police are stepping up patrol and volunteers are increasing their street presence after several violent attacks on older Asians stoked fear in the San Francisco Bay Area's Chinatowns and subdued the celebratory mood leading up to Chinese New Year. (AP Photo/Ben Margot, File)