The artist produced the work, of gauzy fabric embedded with thousands of needles, after speaking to hundreds of mothers whose children were killed by guns

The project was developed in collaboration with the Mass Design Group and gun violence prevention organisations

Survivors, artists and lawmakers debate if public memorials to mass shootings in the US hurt more than they help

An image of his Chicago sculpture Cloud Gate was used in a video by the gun lobby that the artist says “seeks to whip up fear and hate”

The incident has been attributed to gang violence and one suspect was believed to have been killed by police

The Robby Poblete Foundation, started by the mother of an aspiring artist and gun violence victim, aims to take guns off the street and draw attention to daily shootings in minority neighbourhoods

The Austrian artist Martin Roth says the aim is to create a space to discuss violence in the US and help visitors, including school children, take action

The organisation’s “intolerant, divisive vision perverts” the work’s democratic nature