Nothing in America will be the same after November 4. Or at least that’s how YouTube user Steve Yeater sees it.

For most people, Nov. 4 is shaping up to be just another fall Saturday. But to Yeater and others steeped in the conspiracy-minded corners of the pro-Trump internet, that date represents the potential start of a violent reign of terror at the hands of left-wing antifa activists — and maybe, the fall of the American government itself.

On Nov. 4, they expect antifa to terrorize the country, going house to house stealing guns and, depending on which version of the theory you believe, murdering white people, Christians, and/or Trump supporters.

“These are vicious, vicious people,” Yeater says in one video that’s garnered more than 100,000 views. “Your life means nothing to them. Matter of fact, if you’re a white man, you don’t deserve to live. You deserve to die.”

Yeater is far from the only person anxious for Nov. 4. Cataloguing the gun collections you’ve prepped in anticipation of Nov. 4 home defense is a popular genre, as is shooting off the particularly fearsome ones — you really want this, antifa?

At popular pro-Trump blog Gateway Pundit, a credulous headline based on a single tweet warns that “millions of antifa supersoldiers will behead white parents” on Saturday. Meanwhile, the hard-right John Birch Society is urging its viewers to stay home on the would-be antifa “day of rage.”

InfoWars’s Alex Jones, the country’s most prominent conspiracy theorist, has warned his audience that antifa activists are handing out shanks and AK-47s ahead of Saturday’s planned attacks on public officials.

Fortunately for his viewers, the always entrepreneurial Jones has a solution — a special “November 4th” shirt that he guarantees will put the antifa snowflakes in their place.

“They’re going to lose on November 4th and every day after that, because they’re a bunch of meth-head pieces of crap,” Jones says.

Nov. 4 mania has its own thriving image culture on Facebook, including fabricated “planning documents” that urge antifa guerrillas to commit violence while posing as police or Trump supporters.

Naturally, there are also memes.

The idea that antifa death squads will be unleashed on the country on Nov. 4 — like Pizzagate or the idea that Hillary Clinton murdered Seth Rich — is ridiculous on its face. But like those other conspiracy theories popular on the right, it’s only gotten more popular as it received more exposure on the internet.

How did so many people become convinced that Nov. 4 marks a new era of American instability? It’s a story about some communists, fake news sites, a few amateur ham radio operators, and a well-armed bail bondsman.