Could AI be a game changer for America's gun violence epidemic?

Joaquin Oliver was just one of the 17 victims who were murdered at Parkland, Florida back in 2018 – one of America’s deadliest school shootings. But now, through the magic of AI, the victims’ voices are being brought back to life. Lobbying from beyond the grave, Joaquin’s voice is being used to pressure politicians to tighten gun laws. So, could this be a game changer for America’s gun violence epidemic? US Correspondent Dan Rivers tells Tom Bradby what you need to know