My biggest fear as a Black woman and public health leader was the all-too-likely murder of an unarmed Black person at the hands of police leading to mass protests amid the virulence of two infectious diseases: racism and Covid-19. And here we are, a few weeks later, in the nightmarish scenario I can’t unsee: Black America and allies, rightfully angry and fed up with 400-plus years of racist violence and white supremacy, taking to the streets to protest in cities around the country and the world.

—Lauren Powell, in “My nightmare: Covid-19 meets racism meets the killing of a Black person by police”