Eighteen years before the Las Vegas massacre, there was Columbine — a catastrophe that saw two students kill twelve other teenagers and a teacher. In between the two massacres, mass shootings have become a daily occurrence in America — and the question is: why? On this episode, I explore that question with Tom Mauser — the father of Daniel Mauser, who was one of the kids killed at Columbine. Mauser is now a board member of Colorado Ceasefire, a nonprofit that aims to reduce gun violence. Mauser arrived at our recording studio wearing his son’s sneakers. The discussion covered everything from mental health to gun control to politics. Over the course of the conversation, he expressed despondence over the fact that gun laws have not changed, and he also weighed in on whether society should blame the friends and family members of shooters for their acts of violence.