Nothing endangers American public space in 2019 as much as mass shootings, says Yale sociologist Vida Bajc, who studies public space and security. In each of the four shootings, fundamental modes of our shared existence — eating, socializing, shopping, partying — gave way to blood, death, panic, and necessitated the response of a militarized police force.

—Alex Yablon, in “Mass Shootings Are Destroying Our Sense of Public Space”