WASHINGTON — Advocates of a saner approach to guns need a new strategy. We cannot go on like this, wringing our hands in frustration after every tragedy involving firearms. We said “Enough” after Sandy Hook. We thought the moment for action had come. Yet nothing happened. We are saying “Enough” after Charleston. But this time, we don’t even expect anything to happen.

What’s needed is a long-term national effort to change popular attitudes toward handgun ownership. And we need to insist on protecting the rights of Americans who do not want to be anywhere near guns.

None of this should mean letting Congress off the hook or giving up on what might be done now. So kudos to Sens. Joe Manchin, D-W.Va., and Pat Toomey, R-Pa., for saying on Tuesday that they are trying to bring back their proposal that would require background checks for gun sales. In 2013, it failed to get the needed 60 votes and won support from only three Republicans besides Toomey.

Lest anyone doubt that gun-control measures can work, a study released earlier this month by the Center for Gun Policy and Research at Johns Hopkins University found that a 1995 Connecticut law requiring a permit or license contingent on passing a background check was associated with a 40 percent drop in gun homicides.

But as long as gun control is a cause linked to ideology and party — and as long as the National Rifle Association and its allies claim a monopoly on individual rights arguments — reasonable steps of this sort will be ground to death by the Washington Obstruction Machine.

That’s why the nation needs a public-service offensive on behalf of the health and safety of us all. It could build on the Sandy Hook Promise and other civic endeavors. If you doubt it could succeed, consider how quickly opinion changed on the Confederate flag.

My friend Guy Molyneux, a progressive pollster, laid out how it could happen. “We need to build a social movement devoted to the simple proposition that owning handguns makes us less safe, not more,” he told me. “The evidence is overwhelming that having a gun in your home increases the risks of suicide, domestic violence and fatal accidents, and yet the No. 1 reason given for gun purchases is ‘personal safety.’ We need a public health campaign on the dangers of gun ownership, similar to the successful efforts against smoking and drunk driving.”

The facts are compelling. The 2015 Annual Review of Public Health reported that nearly two-thirds of the deaths from firearms violence are suicides. Yes, people can try to kill themselves with pills, but there’s no coming back from a gunshot to the head. Those in the throes of depression who have a gun nearby are more likely to act on their impulses.

Nor do we talk enough about accidental deaths when children get their hands on guns, or what happens when a domestic argument escalates and a firearm is readily available. The message is plain and simple: Households that voluntarily say no to guns are safer.

“The best way to disarm the NRA rhetorically is to make the Second Amendment issue moot,” Molyneux said. “This is not about the government saying you cannot own a handgun. This is about society saying you should not have a gun, especially in a home with children.”

Molyneux says his approach “does not imply giving up on gun control legislation.” On the contrary, the best path to better laws is to foster a revolution in popular attitudes. And this approach would finally put the rights of non-gun owners at the center of the discussion.

“Those of us who want to live, shop, go to school and worship in gun-free spaces also have rights,” Molyneux said. “In what way is ‘freedom’ advanced by telling the owner of a bar or restaurant they cannot ban handguns in their own place of business, as many states now do? Today, it is the NRA that is the enemy of freedom, by seeking to impose its values on everyone else.”

The nation could ring out with the new slogans of liberty: “Not in my house.” “Not in our school.” “Not in my bar.” “Not in our church.” We’d be defending one of our most sacred rights: The right not to bear arms.

E.J. Dionne Jr. is a Washington Post columnist.