. >> reporter: this is not an easy walk for paulette brown to make. >> the grief never ends. >> reportert it's one she's made for 17 years. >> it's just like yesterday to me. >> reporter: august 14th, 2016, her son aubrey was shot and killed here at the intersection of baker and grove in san francisco. 17 years later, the case remains an unsolved homicide. >> i miss him so much. >> reporter: she routinely puts his picture here in the hopes that someone who knows something will come forward with the information police need to crack the case. >> so my love for my son is driving me to keep pushing for justice. i need justice. i need some closure. which i have none right now. >> reporter: closure for an act of sense lens gun violence. >> we're losing our children. my son should be burying me, not me burying him. no one has a right to pick up a gun and take someone's life. an innocent life. >> reporter: brown is far from alone in her grief and pursuit for justice. >> this is a significant public health issue and public safety issue. >> reporter: rodriguez is with the hope and heal fund, a gro