The memorial event, which opened with a video montage of the Bibas family before and during the Oct. 7 attacks, also included remarks by Argentina’s U.N. Ambassador Francisco Fabián Tropepi. 

“We cannot allow these atrocities to be forgotten. We cannot allow those responsible to remain unpunished,” Tropepi said. “What happened on October 7 was not just another attack in the history of this conflict, it was an act of terrorism of unprecedented brutality.”

The Bibas family held both Israeli and Argentinean citizenship. Argentine President Javier Milei declared two days of mourning for the slain mother and her children.

From left, Shiri Bibas, Kfir Bibas, Ariel Bibas and Oded Lifshitz (Hostages Family Forum via AP)

Israeli Prime Minister Benjamin Netanyahu thanked Milei in a post on X, saying the declaration “should serve as an inspiration to all leaders of the civilized world.”

“We will not stop raising our voice until every hostage still in Gaza is brought home, until the terrorists of Hamas are defeated, until the world fully understands the magnitude of horror these people endured,” Tropepi said.