ON 12 JUNE, a little after 2 am, 29-year-old Omar Mateen walked into Pulse, a gay nightclub in Orlando, Florida, and started shooting. The son of Afghan immigrants, Mateen paused at around 2.30 to call 911 and tell the dispatcher he was a follower of ISIS. Over the next three hours, the off-duty security guard killed 49 people and wounded 53 others. At 5 am, police broke through a wall, and as he tried to run out, they shot him down.
Usually, such an insane act is quickly given a tidy meaning. Politicians and editorial writers will interpret it as a terror incident or a hate crime (a curious distinction, if you think about it), an indictment of our gun laws, or some kind of warning about the country’s cultural…