chrissy smith explains. >> reporter: an emotional afternoon in san francisco. richard martinez wears armbands to tell the story of people lost to gun violence as he shared the story of his son, christopher. >> christ and killed may 23rd, 2014. he was a student at uc santa barbara. he was shot and killed in isla vista. >> reporter: a vigil honoring shooting victims and survivors. congresswoman jackie speier, who survived being shot near jones town in 1978, among the speakers. >> i know what it's like to survive and feel compelled atmosphere about the violence that takes place in our country every day. >> reporter: the event timed to coincide with the sixth anniversary of the sandy hook massacre. elizabeth moore is with moms demand action for gun sense in america, an event cohost. >> there's 96 pem a day, 33,000 a year, and that's just deaths. >> reporter: also house democratic leader nancy pelosi who talked about working to pass legislation. >> we cannot just say to people, i'm so sorry, you're in my thoughts and prayers. what congress does is have a moment of silence and no action. >> reporter: in the crowd the tone about what families are facing. >> chris was our only child. he was everything to