The Sandy Hook group says it wants open-minded discussions about a range of issues, including guns, mental health, and safety in schools and other public places. Several speakers said they did not believe there was a single solution.
"We want the Sandy Hook school shootings to be recalled as the turning point where we brought our community and communities across the nation together and set a real course for change," said group cofounder Tom Bittman.
While the Sandy Hook group did not offer specific remedies, mayors and governors in favor of tighter gun restrictions lobbied for a series of them Monday.
New York Mayor Michael Bloomberg, a prominent gun control advocate, addressed a summit on gun violence at Johns Hopkins University in Baltimore and argued for greater federal gun control, including background checks for all purchases and a crackdown on trafficking. "Every state in the union has citizens killed by guns coming from another state, and every state is powerless to stop the mayhem," Bloomberg said.
Bloomberg is cochairman of Mayors Against Illegal Guns, whose members spoke out Monday in cities including Portland, Maine; Fort Wayne, Ind.; and Santa Fe, N.M.
The gun control debate heated up after Adam Lanza, 20, shot his way into Sandy Hook Elementary School on Dec. 14 and killed 26 people. He had killed his mother before driving to the school and committing suicide as police arrived.
President Obama is reviewing proposals from Vice President Biden, who is leading a task force on ways to reduce gun violence. Obama told reporters Monday that he is looking at actions he can take on his own amid fierce resistance from the National Rifle Association and wariness among lawmakers from both parties.
The NRA has resisted new gun control laws and has called for "a meaningful conversation" about school safety, mental-health, and marketing violence to children.