Gopstein serves as head of
Lehava, an anti-assimilation organization. It is dedicated to preventing personal, romantic, or business relationships between Jews and non-Jews, particularly Arabs. Lehava's activities are documented in a recent report titled "Racism and Gender in Israel" by the
Israel Religious Action Center and other groups active against racism. In 2011, Lehava plastered posters in
ultra-Orthodox neighborhoods of Jerusalem deploring a supermarket chain that employed Palestinians. The slogan of the fliers was, "Do you want your grandson to be called Ahmad Ben Sarah?" The group began distributing "kosher certificates" to businesses that did not employ Arabs to encourage discrimination against non-Jews. In 2012, Lehava distributed fliers warning Palestinian men not to date Jewish women. In addition to opposing interfaith marriages, and promoting discrimination against Palestinians and Arabs in employment, Lehava has also encouraged Israelis to report to the organization the names of Jews who rent to Arabs so that they can be named and publicly shamed. A group of anti-racist organizations petitioned Israel's Supreme Court against the state attorney, Lehava, and Gopstein. According to the petition, Gopstein had, in addition to promoting discrimination against Palestinians and other Arabs, praised a group of Jewish youths who attacked Palestinians in Jerusalem, leaving one victim unconscious and hospitalized. The court case is pending. In 2014, three members of Lehava were arrested, and indicted in 2014 for committing arson and spray-painting anti-Arab graffiti at the Max Rayne
Hand in Hand: Center for Jewish Arab Education in Israel (Yad B'Yad) Bilingual School in Jerusalem. Gopstein, along with several other group members, was arrested shortly thereafter for incitement. In the same year, Gopstein openly criticized
Yair Netanyahu, son of then-prime minister,
Benjamin Netanyahu, for dating a Gentile woman of
Nordic descent. In January 2015, Channel 2 reported that Defense Minister
Moshe Ya'alon may be preparing to categorize Lehava as a terrorist organization. Ya'alon was reported to have ordered the
Shin Bet and the Defense Ministry to assemble evidence required for the classification. The arson incident received international attention. Gopstein issued a statement harshly critical of Ya'alon: A journalist participated in Lehava undercover and reported on Gopstein's leadership. Liat Bar-Stav described a meeting that Gopstein led for his followers, in which he said to them: As the crowd responded with booing and cheering, Gopstein continued: Before his Facebook account was permanently disabled, it had doctored images of Arab Israeli Knesset members who appear to be hanged by the neck. In 2023, the
Times of Israel captioned a photo of him as "Extremist, far-right rabbi Bentzi Gopstein shouts 'it’s not pride, it’s an abomination' at the protest against the Jerusalem Pride Parade, June 1, 2023."
Advocacy outside Israel Gopstein wrote a letter to
Facebook founder and CEO
Mark Zuckerberg protesting both Zuckerberg's marriage to a non-Jewish woman, as well as the Palestinian use of Facebook. He complained, "In Israel, too, assimilation is hitting us quite a bit because of your Facebook, where every Muhammad is 'CitySlicker', and every Yosef calls himself 'Prince Charming'". In 2018, Gopstein started a
fund-raiser to raise money to sue Facebook for censorship. ==Attitude towards Christians==