'We have to do better': Nashville school shooting leaves families reeling

Flowers, balloons, and other items are left at a makeshift memorial to the victims of Monday's mass shooting at the Covenant School. Photo: AFP

Robin Wolfenden was practicing yoga on her balcony on a spring morning in Nashville when she heard the sirens – the sound of first responders rushing to the scene of America's latest school shooting.

The next day she laid six stones – a Jewish tradition – for the victims at the entrance of the nearby Covenant School, where a 28-year-old former student broke in and stalked the halls, killing three staff and three young children.