This hate began at home.

A privileged teen from an affluent New Jersey suburb bragged about being “the biggest antisemite in America,” ranted about how he wanted to murder his artist mom’s Jewish friends and menacingly posed for pictures in his $1.2 million family home with swords and knives, according to shocking new court docs related to a major ISIS-linked terror network uncovered by the NYPD and FBI.

Milo Sedarat, 19, the son of a noted Iranian American poet and a mother who hosts a local podcast, raged online about how he wanted to carry out mass executions of Jews, and wanted to run down a pro-Israel demonstration in multicultural Montclair, the US Attorney’s Office in New Jersey alleged in a complaint unsealed Thursday.

Via direct messages and social media, Sedarat, 19, and another unidentified man traded sickening antisemitic chats, according to the complaint.

“I can’t wait for the day I get to execute like 10 yahood,” he said, using what investigators say is an Arabic term for Jewish people.

A former Montclair High School football standout, Tomas Kaan Jimenez-Guzel, 19 — whose mother is a UN diplomat in charge of female entrepreneurship — was also arrested as part of the plot.

He allegedly wanted to carry out a Boston bombing-style attack that would make him so famous, he’d have a Wikipedia page and a Netflix special, and admitted aspirations to be known as “one of the 100 most evil people in the world,” according to court docs.

He also happily volunteered to be in charge of beheadings if the group of alleged co-conspirators ever needed to make any propaganda videos, coldly saying, “I’ll do it, bro,” the complaint alleges.

Jimenez-Guzel was trying to flee to Turkey with plans to cross into Syria and join ISIS when he was arrested at Newark Liberty International Airport earlier this week, the feds said.

Local religious leaders were stunned that such depraved hate could take root in such an accepting community.

“It’s so shocking to see how such a radical ideology can be living in your backyard,” Rabbi Yaacov Leaf of Chabad of Montclair told The Post.

“It’s frightening to realize this type of hate has seeped into our suburban liberal community … It’s a diverse community where we are open to every type of human being and every type of belief system. To see that hate has found its way into the community is very frightening.”

Acting US Attorney for the District of New Jersey Alina Habba told The Post the charges are proof that Islamic radicalization can foment anywhere — even in one of the most desirable towns in the New York metro area.

“We can never believe that even in an affluent town or in New Jersey that this can’t touch us. We take every single case like this seriously. Radicalization unfortunately is something that is a part of our world now.”

She added: “I know it’s jarring. I understand that. I think that the citizens of the state of New Jersey should find comfort in the fact that we don’t take it for granted where we are or what the communities are. We will run down every single lead and every suspect of terrorist organizations regardless of that.”

So far, five men and a juvenile have been arrested in connection to the alleged ISIS-tied terror plot, including two in New Jersey, three in Michigan — where the suspects allegedly bought guns and ammo for a massacre at LGBT nightclubs — and one in Washington state. 

But Jimenez-Guzel said in one communication intercepted by authorities that “13 men can cause so much damage,” indicating more alleged plotters could still be out there.

Sources told The Post that the scheming, gearing up and group chats were part of a “very real plot.” More arrests are likely to be announced soon in the United Kingdom, sources said.

Sedarat’s alleged threats of violence were closer to home.

Feds say he told his own mother that her Jewish friends “deserve to die.”

In response, he later whined, she took away his samurai swords.

He also raved about carrying out mass executions of Jews, according to chats obtained by federal agents.

“Line up like 500 Jews and execute them in front of their wives and family. Then take all their wives [as] slaves. Imma have like 10 yahood slave girls inshallah,” he said, the last word the Arabic term for “God willing.”

Sedarat’s father, Roger, is an award-winning Iranian American poet and a professor at Queens College in New York City.

His mother, Janette Afsharian, is a former stockbroker-turned-local artist, and a four-time Emmy-nominated creative director and multimedia producer, according to her LinkedIn profile.

The family lives in a three-story Victorian home built in 1899 on a quiet street off Upper Mountain Avenue, one of the wealthiest streets in Montclair, lined on both sides with breathtaking historic mansions.

Neighbors described them to The Post as a “good family.”

But somehow, the former wrestler who attended the highly regarded Montclair High School and seemingly had every advantage in life, wound up going down a dark path of hatred and violent ideation.

During a direct message exchange in January, authorities said, Sedarat made comments like “filthy rat Jews need to be eliminated” and “I’m the biggest antisemite in America.”

A few months later, he followed that up with the proclamation that “everyone hates the Jews now” and “I hope a second Holocaust happens to them.”

Last November, Sedarat expressed fear to his friend that his mother might somehow stumble upon his hateful messages, and said he tipped his hand by telling her that her Jewish friends “deserve to die.”

He also claimed his mother’s Jewish friends were “brainwashing her into being a Zionist” and said he was going to “stab them with my sword.”

Sedarat sent numerous black and white images of himself to the unnamed recipient via social media in which he brandished a knife, a sword or both. Some featured him dressed in all black and wearing a balaclava.

Other photos Sedarat shared featured him practicing shooting at a gun range, both with a handgun and a rifle.

Investigators said law enforcement believed he had purchased “knives, tactical gear, and other equipment online” and in one direct message exchange complained that his mother had hidden one of his katana swords.

He once bragged that he always carried a knife and ski mask in his bag, and said that if he ever saw a rabbi while walking the streets of New York City, “[you know] what’s gonna happen … I would be fine with getting shot or going to prison … If I get to take him out,” he said.

“We need to do a 9/11 to [Tel Aviv],” he said in another exchange highlighted by law enforcement.

“Imagine being the guy who sends the missiles to Israel. Like Hezbollah guys … I wish we had missiles like that. It’s not the same tho. Even a gun … I wanna kill them with [a] sword. Look them in the eyes as I take their women and stab them,” he said.

“Imagine capturing like 509 Jews and executing them with a sword. Would be so satisfying.”

Habba announced the charges filed Wednesday against Sedarat and two other individuals who were part of a group chat along with two teenagers and a juvenile arrested in Michigan last week connected to an alleged ISIS-inspired Halloween terror plot — which they codenamed “Pumpkin.”

The suspects were allegedly gearing up for an attack on LGBTQ-friendly bars in the Detroit suburb of Ferndale, Michigan, and had acquired numerous guns and over 1,600 rounds of ammunition.