You have to wonder if right-wingers will ever get it: Difference isn't a threat.

They were mewling like wounded hyenas this weekend after some of us pointed out that there was a direct connection between the irresponsible fearmongering in which they've been indulging since Barack Obama was elected and Saturday's tragedy in Pittsburgh.

Michelle Malkin, for example, whined to her cultlike audience that liberals were being mean to them: "You killed these police officers. It’s all your fault." As Oliver notes, the Instawanker has been thrashing about angrily too.

My favorite, though, was Neil Sheppard at Newsbusters:

Let's be clear what these attacks on folks like Beck, Rush Limbaugh, and Sean Hannity are all about -- the left-wing in our nation want to silence ALL opposing voices in the media, and they will do it using all tools at their disposal INCLUDING blaming journalists and political commentators for the criminal behavior of others.

This is a familiar refrain that comes up every time anyone raises a socially damning issue like this one: We're trying to oppress them, to silence their voices, by pointing out how morally and ethically bankrupt they are.

Actually, we're just pointing out how bankrupt they are. No one here has said anything about silencing their voices -- we just want them to face up to the consequences of their irresponsible rhetoric. It's called culpability: They obviously are not criminally culpable, nor likely even civilly culpable. But they are morally and ethically culpable.

We do have serious differences of opinion here. We strongly believe that there's a clear, common-sense connection between the paranoiac fearmongering that has passed for right-wing rhetoric since well before Obama's election (and has become acute since) and violence like that in Pittsburgh, or in Knoxville: horrifying tragedies, in which the sources of the criminal's unambiguous motives are that very same hysterical fearmongering -- whether it's about the evil socialists, stinking immigrants, or conspiring gun-grabbers who've taken over the country since Election Day.

And yes, Glenn Beck deserves some mention here. As the video above demonstrates, his fearmongering on the gun issue is noteworthy in itself. I'm sure we all remember the time he speculated that these shooters were just ordinary citizens frustrated by "the system" and "political correctness." Or more recently, when he sneered at Missouri law-enforcement efforts to distribute intelligence about right-wing extremists:

Beck: Let's put this into perspective here: Our researchers couldn't find a single report of a single death specifically linked to a militia group, or an individual member of a militia, in over a decade. Yet an average of more than 150 officers die every year nationwide. Have you counted the number of dead police officers in Philadelphia? And militia numbers are reportedly down after the Oklahoma City bombing in 1995 -- seems it gave them a bad name. So why are militias getting so much attention from Missouri?

The point is not to silence the people saying these things, but to point out how grotesquely irresponsible they are -- in the hopes that they will cease doing so, and start acting responsibly. It's their choice to use irresponsible rhetoric. It's not just our choice but our duty, as responsible citizens, to stand up and speak out about it.

And make no mistake: Rhetoric that whips up irrational fears among the public, that demonizes and dehumanizes and scapegoats -- that's irresponsible rhetoric. And we are calling the American Right on it.

Charles W. Blow had a prescient column about this in the New York Times the day before the shooting:

All this talk of revolution is revolting, and it hasn’t gone unnoticed. As the comedian Bill Maher pointed out, strong language can poison weak minds, as it did in the case of Timothy McVeigh. (We sometimes forget that not all dangerous men are trained by Al Qaeda.) At the same time, the unrelenting meme being pushed by the right that Obama will mount an assault on the Second Amendment has helped fuel the panic buying of firearms. According to the F.B.I., there have been 1.2 million more requests for background checks of potential gun buyers from November to February than there were in the same four months last year. That’s 5.5 million requests altogether over that period; more than the number of people living in Bachmann’s Minnesota. Coincidence? Maybe. Just posturing? Hopefully. But it all gives me a really bad feeling.

That's especially the case when you figure the role of right-wing extremists into this situation -- people like Richard Poplawski:

Richard Andrew Poplawski was a young man convinced the nation was secretly controlled by a cabal that would eradicate freedom of speech, take away his guns and use the military to enslave the citizenry. His online profile suggests someone at once lonely and seething. He wrote of burning the backs of both of his hands, the first time with a cigarette, the second time for symmetry. He subscribed to conspiracy theories and, by January 2007, was posting photographs of his tattoos on white supremacist Web site Stormfront. Among his ambitions: "to accumulate enough 'I punched that [expletive] so hard' stories to match my old man." Mr. Poplawski's view of guns and personal freedom took a turn toward the fringes of American politics. With Mr. Perkovic, he appeared to share a belief that the government was controlled from unseen forces, that troops were being shipped home from the Mideast to police the citizenry here, and that Jews secretly ran the country. "We recently discovered that 30 states had declared sovereignty," said Mr. Perkovic, who lives in Lawrenceville. "One of his concerns was why were these major events in America not being reported to the public." ... Believing most media were covering up important events, Mr. Poplawski turned to a far-right conspiracy Web site run by Alex Jones, a self-described documentarian with roots going back to the extremist militia movement of the early 1990s. Around the same time, he joined Florida-based Stormfront, which has long been a clearinghouse Web site for far-right groups. He posted photographs of his tattoo, an eagle spread across his chest. "I was considering gettin' life runes on the outside of my calfs," he wrote. Life runes are a common symbol among white supremacists, notably followers of The National Alliance, a neo-Nazi group linked to an array of violent organizations.

Because we believe in freedom of speech and freedom of thought, there will probably always be haters like Richard Poplawski among us. Inevitably they will be driven by fear: the fear of difference. Because to them, difference of any kind is a threat.

And what we know from experience about volatile, unstable actors like them is that they can be readily induced into violent action by hateful rhetoric that demonizes and dehumanizes other people. And thanks to human nature and those same freedoms, we will certainly always have fearmongering demagogues among us. But the purveyors of such profoundly irresponsible rhetoric need to be called on it -- especially when they hold the nation's media megaphones.

As Bill Clinton put it, after Oklahoma City:

In this country we cherish and guard the right of free speech. We know we love it when we put up with people saying things we absolutely deplore. And we must always be willing to defend their right to say things we deplore to the ultimate degree. But we hear so many loud and angry voices in America today whose sole goal seems to be to try to keep some people as paranoid as possible and the rest of us all torn up and upset with each other. They spread hate. They leave the impression that, by their very words, that violence is acceptable. You ought to see -- I'm sure you are now seeing the reports of some things that are regularly said over the airwaves in America today. Well, people like that who want to share our freedoms must know that their bitter words can have consequences and that freedom has endured in this country for more than two centuries because it was coupled with an enormous sense of responsibility on the part of the American people. If we are to have freedom to speak, freedom to assemble, and, yes, the freedom to bear arms, we must have responsibility as well. And to those of us who do not agree with the purveyors of hatred and division, with the promoters of paranoia, I remind you that we have freedom of speech, too, and we have responsibilities, too. And some of us have not discharged our responsibilities. It is time we all stood up and spoke against that kind of reckless speech and behavior. If they insist on being irresponsible with our common liberties, then we must be all the more responsible with our liberties. When they talk of hatred, we must stand against them. When they talk of violence, we must stand against them. When they say things that are irresponsible, that may have egregious consequences, we must call them on it. The exercise of their freedom of speech makes our silence all the more unforgivable. So exercise yours, my fellow Americans. Our country, our future, our way of life is at stake.

Of course, the right-wingers mewled piteously after Clinton gave that speech, too. They claimed he was trying to silence them, when in fact he was quite explicit about not doing that. Nonetheless, it became part of established right-wing lore that "Clinton blamed Rush Limbaugh for Oklahoma City."

It's classic projection, of course -- because when they attack liberals, especially in the very personal way they favor, they are trying to silence them.

They won't be able to keep getting away with that ruse forever. Because we're not trying to silence them. We're standing up to them. We're not threatening them -- we're simply engaging in our own right of free speech, just like them.

They simply don't want to have to deal with the substance of what we're saying. They don't want to face up to the very real culpability for which they are being called out.