The family of Raphael Lemkin — the Polish-born Jewish lawyer who coined the term “genocide” and helped draft the Genocide Convention after World War II — is taking legal action against a stridently anti-Israel group based in the US, accusing the nonprofit organization of corrupting his family name and legacy.

Joseph Lemkin, the cousin of Raphael Lemkin and closest living relative, confirmed to The Algemeiner that his family is initiating legal proceedings against the Pennsylvania-based Lemkin Institute for Genocide Prevention, with the support of the European Jewish Association (EJA), to stop the misuse of his family name.

“From our perspective, the Lemkin Institute has no right to use his name. Their actions are completely opposed to what he stood for,” Lemkin told The Algemeiner, referring to his cousin. “He was a passionate Zionist who dedicated all his efforts and resources to one cause: the adoption of the Genocide Convention.”

Lemkin’s father was Raphael Lemkin’s first cousin, and he said the two men had a close relationship.

First reported by The Algemeiner, the institute has used the Lemkin name to advance an agenda of extreme anti-Israel activism, which Lemkin’s family called a “shameful betrayal” of their legacy.

Initially registered in Pennsylvania as a nonprofit organization in 2021, the institute received US federal tax-exempt status two years later.

Since the Hamas-led invasion of and massacre across southern Israel on Oct. 7, 2023, the organization has shifted toward aggressive anti-Israel political advocacy, backing pro-Hamas campus protests and reaching millions on social media with posts that falsely accuse Israel of genocide.

Less than a week after the Oct. 7 atrocities, for example, the institute released a “genocide alert” calling the Palestinian terrorist group’s onslaught an “unprecedented military operation against Israel.”

Comparing Israel’s defensive military actions against Hamas to the Holocaust, the institute accused the Jewish state of carrying out a “genocide” against Palestinians — the very term Raphael Lemkin coined in 1943. Israel had not even launched its ground offensive in Gaza at the time of the social media posts.

Days later, the Lemkin Institute called on the International Criminal Court “to indict Israeli Prime Minister Benjamin Netanyahu for the crime of #genocide in light of the siege and bombardment of #Gaza and the many expressions of genocidal intent.” Israel still had not initiated its ground campaign.

Since then, the organization’s vocal anti-Israel advocacy has continued unabated for the past two years, accusing the Jewish state of genocide and terrorism while largely staying silent about Hamas.

According to the Lemkin family, such statements distort history and undermine their legacy, but even more, they disrespect the memory of six million Jews.

“The institute has used this term to promote an inflammatory, antisemitic stance against Israel — completely contrary to the principles he stood for,” Joseph Lemkin told The Algemeiner, referring to his cousin.

“Astonishingly, they have even expressed support for Hezbollah and Hamas — both internationally designated terrorist organizations — while smearing Israel,” he continued.

Now, legal steps are underway to hold the institute accountable, stop it from exploiting the Lemkin name to raise money, and end its Holocaust comparisons.

After first sending letters demanding that the institute change its name, the Lemkin family is now awaiting a response — and if no voluntary action is taken or Pennsylvania officials fail to intervene, the matter will be taken to court, Lemkin told The Algemeiner.

Beyond its communications with the institute, the EJA legal team also sent letters to Gov. Josh Shapiro and Pennsylvania’s Bureau of Corporations and Charitable Organizations regarding this issue.

“The Lemkin Institute, through its very name, as well as its marketing and other materials, represents itself as an embodiment of Mr. Lemkin’s ideology. In reality, the Lemkin Institute’s policies, positions, activities, and publications are anathema to Mr. Lemkin’s belief system,” the letter reads.

“The Lemkin Institute is not authorized by Raphael Lemkin’s family, his estate, or any custodian of his legacy to rely upon his name for any purpose,” it continues. “The European Jewish Association and Mr. Lemkin’s family are outraged by the Lemkin Institute’s use of Mr. Lemkin’s name, especially in the context of the Lemkin Institute’s anti-Israel agenda.”

EJA Chairman Rabbi Menachem Margolin has sharply condemned the institute’s actions and statements, saying it has “weaponized a sacred legacy against the very people it was meant to protect.”

“The Lemkin Institute was established to prevent genocide — not to distort its definition or fuel antisemitic tropes,” Margolin said in a statement.

Raphael Lemkin was born in Poland in 1900 and eventually escaped the Nazis to the US, where he joined the War Department, documenting Nazi atrocities and preparing for the prosecution of Nazi crimes at the Nuremberg trials. He dedicated much of his life to making the world recognize the horrors of the Holocaust and designating mass murder as a crime which could be prosecuted through international law. Forty-nine members of his family, including his parents, were killed in the Holocaust. He died in 1959.

A 2017 article by James Loeffler, who now teaches at Johns Hopkins University, described what he called “the forgotten Zionism of Raphael Lemkin.” Loeffler noted that while “dead international lawyers rarely become celebrities,” Lemkin “has emerged as a potent symbol for activists and politicians across the world.”

Loeffler traced Lemkin’s work as an editor and columnist of a Jewish publication, Zionist World. “The task of the Jewish people is … [to become] a permanent national majority in its own national home,” Lemkin wrote in one such column.

“It is not enough to know Zionism,” Lemkin wrote in another column quoted by Loeffler. “One must imbibe its spirit, one must make Zionism a part of one’s very own ‘self,’ and be prepared to make sacrifices on its behalf.”

Elisa von Joeden-Forgey, founder and executive director of the Lemkin Institute, told the online news site EJewish Philanthropy that her organization was named after Lemkin to “bring his name back into public discourse” but “there was no clear person to contact” when naming the institute in 2021.

“We don’t want to cause unhappiness for anybody in the Lemkin family. We did ask to know what legal basis exists for the complaint, and we have not received any response to that specific question,” she added.