The director did an amazing job of obtaining witness statements and original video footage. He was also able to create a compelling and heartbreaking documentary that does a great service in preserving their stories. The director's desire to understand and elevate each victim really made this an amazing movie.
Having said that, however, the director's tiresome desire to blame the police for the suspect's killing spree greatly diminished the potential power of his documentary. He really ran it off the rails in a series of strange interview scenes with (then) San Diego Police Chief Sanders. In these scenes, the director suggested Chief Sander's had a pager malfunction that somehow contributed to the loss of human life, yet offered no evidence to support his contention. This was then followed by even more bizarre innuendo and the startling question: "Do you feel like you got away with something?" Huh?
Sadly, the director's police-blaming weirdness greatly diminished his otherwise compelling presentation of the victim's and their stories.
I hope he will go back and make this documentary timeless by editing it.
My advice would be: Blame the killer and honor the victims. Study Columbine (1999) and subsequent evolution of "Active Shooter" police tactics. There is still time to get this film back on track by taking your bias and ignorance out of it.