The film's great power comes from naming the dead and briefly bringing each unique child back to life, with tiny details that can wreck you with their specificity. It's a movie to fill a viewer with freshened loss and renewed resolve.

It’s not self-congratulatory — that would be repugnant, so don’t worry, the focus is still the children and their families — but Hartman is on a journey, and that journey changed him and his photographer.

Between each scene, the reporter shares his motivations for the project, which provides its own moving subplot

This is a gentle and soothing documentary that offers quiet comfort to those who have lost loved ones in mindless school shootings across the United States.