Even with the murders that have already occurred, Americans are not paying enough attention to the frightening connection between the right-wing hate-mongers who continue to slither among us and the gun crazies who believe a well-aimed bullet is the ticket to all their dreams.

I hope I’m wrong, but I can’t help feeling as if the murder at the United States Holocaust Memorial Museum in Washington and the assassination of the abortion doctor in Wichita, Kan., and the slaying of three police officers in Pittsburgh — all of them right-wing, hate-driven attacks — were just the beginning and that worse is to come.

As if the wackos weren’t dangerous enough to begin with, the fuel to further inflame them is available in the over-the-top rhetoric of the National Rifle Association, which has relentlessly pounded the bogus theme that Barack Obama is planning to take away people’s guns. The group’s anti-Obama Web site is called gunbanobama.com.

While the N.R.A. is not advocating violence, it shouldn’t take more than a glance at the newspapers to understand why this is a message that the country could do without. James von Brunn, the man accused of using a rifle to shoot a guard to death at the Holocaust museum last week, was described by relatives, associates and the police as a virulent racist and anti-Semite.

Investigators said they found a note that had been signed by von Brunn in the car that he double-parked outside the museum. The note said, “You want my weapons — this is how you’ll get them.”

Richard Poplawski, who, according to authorities, used a high-powered rifle to kill three Pittsburgh police officers in April, reportedly believed that Zionists were running the world and that, yes, Obama was planning to crack down on gun ownership. A friend said of Poplawski, he “feared the Obama gun ban that’s on the way.”

There is no Obama gun ban on the way. Gun control advocates are, frankly, disappointed in the president’s unwillingness to move ahead on even the mildest of gun control measures.

What’s important to grasp here is that this madness has nothing to do with hunting, which the politicians always claim to be defending, and everything to do with the use of firearms to resist policies and lawful government actions that some gun owners don’t like.

In a speech in February to the Conservative Political Action Conference, the executive vice president of the N.R.A., Wayne LaPierre, said: “Our founding fathers understood that the guys with the guns make the rules.”

A new book by Dennis Henigan, a vice president at the Brady Center to Prevent Gun Violence, goes into detail on this point. In “Lethal Logic: Exploding the Myths That Paralyze American Gun Policy,” Mr. Henigan refers to a Harvard Law Journal article written by an N.R.A. lawyer titled, “The Second Amendment Ain’t About Hunting.” In the article, the lawyer makes it clear that for the N.R.A., the right to bear arms is “directed at maintaining an armed citizenry. … to protect against the tyranny of our own government.”

There was a wave of right-wing craziness along those lines during the Clinton administration. Four federal agents were killed and 16 others wounded in 1993 during an attempt to serve a search warrant at the Branch Davidian compound near Waco, Tex., where a stockpile of illegal machine guns had been amassed. The subsequent siege ended disastrously with a raging fire in which scores of people were killed.

In the aftermath of Waco, the N.R.A. did its typically hysterical, fear-mongering thing. In a fund-raising letter in the spring of 1995, LaPierre wrote: “Jack-booted government thugs [have] more power to take away our Constitutional rights, break in our doors, seize our guns, destroy our property, and even injure or kill us. …”

Whatever the N.R.A. may intend by its rhetoric, there is always the danger that those inclined toward violence will incorporate it into their twisted worldview, and will find in the rhetoric a justification for murder. On the second anniversary of the Branch Davidian fire, less than a week after LaPierre’s inflammatory fund-raising letter went out, Timothy McVeigh blew up the Alfred P. Murrah Federal Building in Oklahoma City.

You cannot blame the N.R.A. for McVeigh’s actions. But you can sure blame it for ignoring the tragic lessons of history and continuing to spray gasoline into an environment that we have seen explode time and again.

The Southern Poverty Law Center has reported a resurgence of right-wing hate groups in the U.S. since Mr. Obama was elected president. Gun craziness of all kinds, including the passage of local laws making it easier to own and conceal weapons, is on the rise. Hate-filled Web sites are calling attention to the fact that the U.S. has a black president and that his chief of staff is Jewish.

It might be wise to pay closer attention than we’ve been paying. The first step should be to bring additional gun control back into the policy mix.