It has been 20 years since the Columbine High School mass shooting, a tragedy that, at the time, was the worst school shooting in U.S. history. As we consider the staggeringly high rates of youth violence in the U.S. compared to other developed countries, we must examine why – and how can we help. Our resource Youth Under Fire: The Fight Against Violence will help lead you in an important conversation about gun violence. Watch it now on Castle.