Kupfer, a well-known activist for the Likud Party and once a prospect for a top post in the World Zionist Organization, had garnered controversy over his career due to alleged racist statements.
According to a Haaretz report, Kupfer referred to members of the Arab-Israeli parties as "enemies of the state," denied the existence of Palestinian identity, said their rights are more dangerous than COVID-19 and claimed that Yitzhak Rabin's murder was a shame because it meant he couldn't be tried in a military court.
Kupfer was a long-time Likud activist in France, and an ardent proponent of Israeli settlements. He immigrated to Israel 20 years ago, and was a founder of the organization Israel is Forever, which largely focuses on French Jewry.
Kupfer died after a long battle with cancer.