On 1 October 2017, Heather Gooze was serving drinks at the Route 91 music festival in Las Vegas when concert-goers began running into her bar, screaming and covered in blood.
A gunman perched high in a Las Vegas hotel had opened fire on the festivities below. He killed 60 people and wounded over 400 more. He was able to carry out what is still the deadliest mass shooting in US history because of a mechanism he installed on his gun known as a bump stock.
In the aftermath of the massacre, then-President Donald Trump banned bump stocks, a modification that allows a rifle to fire like a machine gun. It was a rare example of the US making a change to its gun policies in the wake of a mass shooting, and it was a reform that survivors of the attack welcomed.
The ban was all the more extraordinary because it was instituted by a Republican president and supported by the National Rifle Association, figures that would normally oppose a gun…
