Baruch Kopel Goldstein was an American-Israeli mass murderer, religious extremist, and physician who perpetrated the 1994 Cave of the Patriarchs massacre in Hebron in the Israeli-occupied West Bank, an incident of Jewish terrorism. Goldstein was a supporter of the Kach, a religious Zionist party that the United States, the European Union and other countries designate as a terrorist organization.

Kach was a radical Orthodox Jewish, religious Zionist political party in Israel, existing from 1971 to 1994. Founded by Rabbi Meir Kahane in 1971, based on his Jewish-Orthodox-nationalist ideology, the party earned a single seat in the Knesset in the 1984 election, after several electoral failures. However, it was barred from participating in the next election in 1988 under the revised Knesset Elections Law banning parties that incited racism. After Kahane's assassination in 1990, the party split, with Kahane Chai breaking away from the main Kach faction.