Nicole Hockley's son Dylan was six when an armed man burst into Sandy Hook Elementary School in December 2012, killing 26 children and adults. It remains the deadliest school shooting in US history. Nicole says the fabric of the universe was torn apart that day and she has been trying to repair it ever since. Her organisation Sandy Hook Promise is now spreading school violence prevention programmes nationwide. She says these are "not about the gun" - they are about trying to stop the violence before guns are ever involved.

Just a few weeks before the tragedy at Sandy Hook, Lucy McBath's 17-year-old son Jordan Davis was shot dead at a gas station in Jacksonville, Florida. Jordan was African American and the shooter was a middle-aged white man. Lucy believes race and America's gun laws both played their part in her child's murder, and she now speaks out in his memory. She is faith and outreach leader for Moms Demand Action for Gun Sense in America, and Every Town for Gun Safety.

Image: (L) Lucy McBath and (R) Nicole Hockley

Credit: n/a