This chilling video from Sandy Hook Promise shows how gun violence is destroying childhood in America

As another school year opens, millions of American children will have to undergo active shooter training because their country doesn’t have laws in place that effectively control gun violence. Sandy Hook Promise, an organization founded by relatives of some Sandy Hook elementary school-shooting victims, released a video that captures the horror that American children grow up fearing and the association between school and gun violence that they must be trained to make, in order to save their lives. A majority of Americans are in favor of tougher gun laws, which have been shown to reduce gun violence.