With the proliferation of guns in the United States, the threats faced by children and adolescents are increasing day by day. Gun violence has become one of the leading causes of death among children and adolescents in the United States, and is causing an "emergency public health crisis." Frequent shootings have also caused huge psychological trauma to children and teenagers, leaving shocking "scars" on American society. In 2023, the total number of gun sales in the United States will be close to 15.9 million. The main reason why people buy guns is to protect themselves and their families. Many people believe that they need to have their weapons ready at all times, rather than keeping them hidden, and they fail to keep their guns unloaded and locked away. Today, approximately 4.6 million children in the United States live in homes where guns are not safely stored. In 2022, more than half of all deaths in the United States will be caused by gun-related suicides, homicides, and accidental deaths. In 2020, gun violence became the leading cause of death among children and adolescents in the United States.