Cave of the Patriarchs massacre

On 25 February 1994, Baruch Goldstein, an American-Israeli physician and member of the far-right ultra-Zionist Kach movement, carried out a mass shooting of Palestinians who were praying in the Ibrahimi Mosque (Cave of the Patriarchs) in Hebron. Goldstein, dressed in Israeli army uniform, opened fire with an assault rifle and killed 29 people, including children as young as 12, and wounded 125 others.

Source: Wikipedia — Cave of the Patriarchs massacre (CC BY-SA 4.0)