Signs of governments reassessing their coronavirus response were scattered around the world Sunday, with the mayor of Los Angeles saying the city was reopened too quickly, Ohio's governor warning his state is "going the wrong way," Hong Kong issuing tougher new rules on wearing face masks and Spain closing overcrowded beaches.

Los Angeles Mayor Eric Garcetti said Los Angeles was "on the brink" of new widespread stay-at-home orders as Los Angeles County continued to see the state's largest increase in confirmed coronavirus cases. California reported on Saturday its fourth-highest daily total of...