Some gun-control advocates said they feared that they had seen their best chance for change in 20 years pass. Others said they worried it would come again soon.
“I wish Newtown was our last mass shooting,” Johns Hopkins Center for Gun Policy and Research director Daniel Webster said. “There are going to be more mass shootings. There are going to be more incidents where people will try to figure out what in the hell is wrong here.”
Additional reporting by Edith Honan