Mass gatherings, erosion of trust upend coronavirus control

FILE - In this Saturday, May 30, 2020, file photo, shows protesters demonstrating in Salt Lake City. Protests in Salt Lake City that drew several thousand people are a setback for contact tracers already struggling to contain the spread of the coronavirus, said Tair Kiphibane, infectious disease bureau manager for the Salt Lake County Health Department. (AP Photo/Rick Bowmer, File)

NEW YORK — Protests erupting throughout the nation during the past week — and law enforcement’s response to them — are threatening to upend efforts by health officials to track and contain the spread of coronavirus just as those efforts were finally getting underway.