Customers wait in a line that stretches around the block to enter the West Seattle Farmers Market on May 3 after its reopening. (Elaine Thompson/AP)

Some officials are backing off requirements that people wear masks inside businesses, as cities, counties and states — left to devise their own guidelines — run into limits on their ability to maintain public health precautions with stay-at-home orders easing during the coronavirus pandemic.

The issue pushed a small Oklahoma city into the national spotlight this weekend, after leaders quickly withdrew a mandate to don masks inside reopened stores and restaurants, citing threats of violence and physical abuse directed at employees. The mayor of Stillwater apologized to businesses for putting them in a dangerous position, as some people responded virulently to the new rules.