San Francisco’s Dolores Park on July 4. | Santiago Mejia/The San Francisco Chronicle via Getty Images

The city could have crushed the coronavirus. Then Trump got in the way.

On June 25, San Francisco Mayor London Breed was excited the city’s zoo would finally reopen after closing down for months in response to Covid-19. She visited the facilities, posting photos on social media with a mask on and giraffes in the background.

“I know people are eager to get back to some sense of normalcy, especially families and children,” she tweeted. And it looked like her city was taking a step toward it.

The day after the visit, Breed had to announce the sad news: San Francisco’s reopening plan — for the zoo and various other facilities, including hair salons and indoor museums — would have to be put on hold.

“COVID-19 cases