A hateful “art’’ installation featuring a mock street sign reading, “F–k Israel Ln” and a “Hamas Lover” poster was exhibited on taxpayer-funded Governors Island during a weekend family Halloween event.

The crude “unauthorized” display excoriated the Jewish state, including with another poster that read it’s “beyond the pale” for Israel to exist and lauded US-designated terror groups, according to images obtained by The Post.

The outside of the cabin housing the installation ironically had a sign on it that said, “Revive Humanity Now.”

“Not subtle. Not metaphorical. Just hate, displayed at eye level in a family event space where children were trick-or-treating,” Kobi Lahav, 48, who inadvertently stopped by the studio Sunday with his family, told The Post of the exhibit.

Lahav said the deeply disturbing display was “designed to celebrate violence.

“To normalize calls for the destruction of a nation-state,” said Lahav, who is Jewish with Israeli roots and lives in Manhattan.

“To romanticize terrorism. And it was set up in a family-friendly event space on a sunny Sunday afternoon where the next house over was handing out Snickers bars.”

The collection of “art” was in the complex’s Building 11, a space seasonally occupied by Swale, a food-forest non-profit that is part of the Trust of Governor Island’s in-residence program, which invites artists onto the grounds.

The Trust for Governors Island and Swale both condemned the exhibit to The Post and blamed the exhibit’s “artist,” Rebecca Goyette, who they said was not part of the group’s official programming.

Swale claimed Goyette was instead “invited into an empty back studio by a current artist-in-residence during seasonal wind-down without authorization to display work.

“We view this as a deliberate and malicious act by the artist,” Swale said.

“Like many visitors, members of our team also encountered this display and were personally affected by its content and conduct. We share the community’s distress and stand with those who were harmed.

“It remains our duty to protect visitors and uphold standards in our spaces.”

The guest artist and the resident who invited her were both banned from the space, and “neither will be invited back,” Swale said.

The exhibit was up for a few hours before officials became aware of it and immediately took it down, a rep for Swale also told The Post.

Goyette, when approached by a Post reporter on a Brooklyn street Tuesday, ran away as she screeched, “Get the f–k away from me, what are you doing.”  

Sarah Olson, who was the artist-in-residence assailed by Swale, argued in a Post interview that Swale gave permission for some of Goyette’s work to appear on the island months ago but that she and the organization were duped by Goyette.

Olson said she thought Goyette’s work was going to be focused on the struggles of Palestinian children in Gaza during the war between Hamas and Israel, which she conveyed to Swale – and not the offensive material that ended up in the space.

“I have supported Rebecca and her activism, but she didn’t respect that this was a family event,” Olson said.

Olson claimed that Friday, a coordinator for the Swale house, Kim Darling, saw at least the “F–k” Israel” sign – an accusation that Darling strenuously denied in an email.  

“What I witnessed on Friday were drawings of her and her partner,” Darling said. “At no time that I witness anything like what I’ve seen in the pictures.”

Olson admitted she saw the Israel sign herself but didn’t think much of it beyond that it was free speech and didn’t realize the outrage that would follow.

Beyond the mocked-up road sign, the art installation also had a poster that stated “Beyond the pale: Israel’s existence” and a drawing of a KKK hoodie with the Israeli and American flags.

Another poster showed a bird with a “F–k Israel” in a speech bubble.

Other items celebrated terrorists, including one that read “Hamas Lover” with an inverted red triangle and a painting of a flag representing Hezbollah.

Another poster board had a fist in the air with the Palestinian colors of red, green, white and black painted across it with the text “Free Palestine” and “Abolish Israel.”

The Governors Island’s trust called the display “completely unacceptable.

“The Trust for Governors Island has no tolerance for hate speech or discrimination of any kind,” a representative said.

Goyette has voiced support for Palestinian people in online social-media posts, including claiming she was falling in love virtually with a dentist in Gaza as the pair shared “vampire dentist jokes like ‘I’m gonna bite you.’”

Olson claimed that when anger began to build by spectators at Goyette’s exhibit Sunday when she was there, Olson asked Goyette to take down the installation, but she initially refused.

“It was her choice to stay, but it’s being made to sound like I brought her in unauthorized, and that is not at all the case,” Olson said.

The city has faced a notable spike in hate directed at Israelis and Jewish New Yorkers since Hamas’ Oct. 7, 2023, terror attack on Israel that sparked a war in Gaza.

Governors Island’s grounds and activities are run by private funds and taxpayer money across different levels of government. 

City officials said no Big Apple taxpayer funds went toward the building or artwork.

The disputed collection of “art” was fiercely panned by Big Apple Jewish leaders and Mayor Eric Adams.

“The Adams administration has zero tolerance for antisemitism or any other form of hate speech, especially the support of a terrorist organization or calls for the destruction of an entire people,” Adams said in a statement.

“The exhibit displayed at an art house on Governors Island over the weekend was sickening and deeply offensive to the Jewish community and to any New Yorker opposed to hate.”

Dov Hikind, founder of Americans Against Antisemitism, said hatred against Jews is “out of control.

“This rampant antisemitism is going on in places we never imagined,” he said.

Brooklyn state Assemblyman Kalman Yeger echoed that sentiment.

“Sadly, this is another example of the normalization of Jew Hatred the Mamdani era is festering in New York,” he said in reference to mayoral front-runner Zohran Mamdani, who has faced criticism for his harsh anti-Israel stance.