9 September 2016 Video

In this preview from the Mexico City episode of Season 8 of ART21's Art in the Twenty-First Century, Pedro Reyes organises a workshop where participants create musical instruments from firearms. "Doing these workshops is an attempt to transform not only the material metal, but also to try to create a psychological transformation," says the artist. "And, hopefully, a social transformation."

Season 8 of Art in the Twenty-First Century premieres Friday 16 September 2016 at 9pm ET on PBS (check local listings). Mexico City airs 16 September at 10pm ET.