In honor of Tuesday’s National Gun Violence Awareness Day, HBO has released the trailer for its upcoming documentary Requiem for the Dead: American Spring 2014. The film uses footage from social media, 9-1-1 calls, and police files to piece together the stories behind Americans who died of gun violence—accidental shootings, family disputes, and more—in the spring of 2014. According to a press release, the people included in the film represents “just a fraction of the 32,000 people who are lost to gunfire in America every year.”