Monday’s events left advocates calling for more action from the White House and Congress, with some arguing that the series of shootings was having a cumulative effect on the public even if the latest spree seemed unlikely to be as nationally searing as Sandy Hook.

“I think the country and indeed the president have reached the tipping point not because of one mass shooting but because of an aggregate drip, drip, drip of more and more mass shootings,” said Mark Glaze of Mayors Against Illegal Guns — a group New York Mayor Michael Bloomberg formed to do battle with the National Rifle Association over the issue. “Every time this happens, it throws additional fuel on a fire already blazing pretty high.”

Dan Gross of the Brady Campaign to Prevent Gun Violence said that if people thought Newtown itself would be so transformative that it would vault gun legislation into law, they were mistaken.

“No one tragedy — no matter how horrible — is going to be enough to create the sustained public will that’s necessary to create change on this issue,” he said.