The United States has reached a new crossroads in its gun violence crisis.   More than 45,000 Americans died as a result of gun-related injuries in 2020, the highest number on record. Guns became the greatest cause of mortality for American children. So far this year, there have been over 400 mass shootings in the United States, including tragedies in Buffalo, New York and Uvalde, Texas.   In many ways, America’s decades-long epidemic of gun violence has led to a unique form of collective trauma. It is felt by shooting survivors, the families and friends of victims, first responders, community members – and those throughout the country who watch events unfold on television and social media. Meanwhile, suicide accounts for more than half of all gun-related deaths in the U.S. And the daily impact of community gun violence continues to grip American cities, leading to widespread mental health impacts.