Sheri Barnett relived her son's murder when she heard of Friday's killing in Newtown, CT, of 26 people, most of them children.
"We are all heart sick," Barnett said Saturday at the Federal Building on Wilshire Boulevard in Westwood, where supporters of gun legislation gathered to call for stricter controls on assault weapons.
Barnett's son was killed in a 1998 drive-by shooting in Harbor City, and the crime was never solved.
The Palos Verdes resident and others at the rally and vigil hope that this latest mass killing will spur the country to reinstate an assault weapons ban.
Several dozen demonstators were expected at the rally organized by the Brady Campaign to Prevent Gun Violence, The Violence Prevention Coalition of Los Angeles, and Women Against Gun Violence.
Margo Bennett, a member of Women Against Gun Violence, said the group believes the tide is turning in favor of sensible gun legislation in the wake of the latest killings.
"It's enough," said Bennett. "We believe the tide is changing."