I watched the video with the sound off.

I’m not a dispassionate person by nature, but much of my professional experience and training (as a medic, as a counselor in the Psych/Security unit of a prison for women, and as a private investigator specializing in criminal defense) has taught me to be a detached observer/participant. Well, as detached as possible. You can’t be effective on the job if you allow yourself to fully experience the shock, the horror, the revulsion while you’re doing the job. The emotional distance between you and what you’re doing and seeing is the only thing that allows you to do the job well. You put all that ugliness aside and deal with it later. The problem, of course, is that you always have to deal with it

That’s why, last night, I watched the video of the attack on the Al Noor Mosque in Christchurch, New Zealand with the sound off. I didn’t want to hear the screaming. It’s harder to be a detached observer when you hear the screaming.

“I am just a regular white man, from a regular family, who decided to take a stand to ensure a future for my people.”

How do you even begin to explain all this, to understand it? Do you start with Brenton Tarrant, the shooter? He doesn’t really believe he’s just a regular white man, of course. He’s a white supremacist who thinks shooting unarmed people in a house of worship somehow makes him a hero. But if you focus on individual shooters — the Brenton Tarrants, the Anders Breiviks, the Dylann Roofs — it’s easy to overlook the connections that link so many of these white supremacy shooters.

“The origins of my language is European, my culture is European, my political beliefs are European, my philosophical beliefs are European, my identity is European and, most importantly, my blood is European.

We must crush immigration and deport those invaders already living on our soil, It is not just a matter of our prosperity, but the very survival of our people.”

There it is. Tarrant’s ‘justification’ for murdering Muslims at prayer. Fear and hate born out of the irrational notion of white victimhood, then transmitted, promoted and amplified by the Internet. Tarrant referred to this in his Great Replacement ‘manifesto’ (they all seem to have manifestos, these shooters; without a manifesto you’re just a fucking nutcase — with a manifesto you’re a hero).

This Great Replacement conspiracy theory didn’t originate with Tarrant. It’s been banging around in white supremacy circles for almost half a century. It began with a 1973 French novel, Les Camps des Saints, in which Western civilization is destroyed through the mass immigration of Third World peoples. The author of the novel, Jean Raspail, said he got the idea for the plot when he was visiting the Riviera.

“What if they were to come? I did not know who “they” were, but it seemed inevitable to me that the numberless disinherited people of the South would, like a tidal wave, set sail one day for this opulent shore, our fortunate country’s wide-gaping frontier.”

There it is again. The ‘justification’ for the Great Replacement theory. The fear and belief that white European Christian populations are being systematically replaced by non-European brown-skinned populations through mass migration and demographic growth. If you’re in Europe the immigrants are Middle Eastern, North African, and Sub-Saharan; if you’re in the US, the immigrants are from Central and South America. This notion of white European culture being overrun by non-white alien cultures resounds throughout the online white supremacy community.

Would Tarrant have acted in the absence of that community, in the absence of the reinforcement and amplification of that conspiracy theory? I don’t know. But the thing is, the echoes of Great Replacement filter through mainstream US and European politics.

“When Mexico sends its people, they’re not sending their best. They’re sending people that have lots of problems, and they’re bringing those problems with us. They’re bringing drugs. They’re bringing crime. They’re rapists.”

Does this make Trump responsible for the Christchurch mosque massacre? No, of course not. But it helps white supremacists like Tarrant justify their actions. Tarrant stated he viewed Donald Trump “as a symbol of renewed white identity and common purpose.” When Trump refers to an influx of families fleeing violence and poverty as an ‘invasion’ on the Southern border, he’s feeding the conspiracy theory. When he claims people seeking asylum is a ‘national emergency,’ he’s feeding the conspiracy theory.

When it was revealed that an audio tape of the torture and murder of Washington Post reporter Jamal Khashoggi existed, Trump refused to listen to it.

“I don’t want to hear the tape. No reason for me to hear the tape. I know everything that went on in the tape without having to hear it “

I totally understand that. It’s why I watched the video with the sound off. It’s harder to be detached when you hear the screaming.

But the truth is, even with the sound off I still heard the screaming in the mosque. I’m still hearing it this morning. That business about dealing with the horror later? That’s mostly bullshit that allows you to do what you need to do. But if you’ve ever heard the screaming in any context, you can never unhear it.

If you have any humanity at all, if you have any decency at all, you never stop hearing the screaming.