A crowd crush killed 45 people during the annual pilgrimage to the tomb of Rabbi Shimon bar Yochai in Israel.

On 30 April 2021, at about 00:45 IDT (UTC+3), a deadly crowd crush occurred on Mount Meron, Israel, during the annual pilgrimage to the tomb of Rabbi Shimon bar Yochai on the Jewish holiday of Lag BaOmer, at which it was estimated that 100,000 people were in attendance. Forty-five men and boys at the event were killed, and about 150 were injured, dozens of them critically, making it the deadliest civil disaster in the history of the State of Israel. The crush occurred after celebrants poured out of one section of the mountainside compound, down a passageway with a sloping metal floor wet with spilled drinks, leading to a staircase continuing down. Witnesses say that people tripped and slipped near the top of the stairs. Those behind, unaware of the blockage ahead, continued. The people further down were trampled over, crushed, and asphyxiated by compression, calling out that they could not breathe.

Every year on Lag BaOmer, some 200,000 people attend the 'Yom Hillula' at the tomb of Rabbi Shimon bar Yochai in Meron, Israel. The highlight of the event is the traditional bonfire lit after nightfall on the roof of the tomb, after which celebration with music and dancing begins. From the 13th century onwards, the site became the most popular Jewish pilgrimage site in all of Israel, the celebration first being mentioned by an Italian traveller in 1322. Today it is the largest mass annual event in Israel.

The tomb of Shimon bar Yochai, or Kever Rashbi, on Mount Meron is the traditional burial place of the 2nd-century Mishnaic rabbi Shimon bar Yochai. A place of pilgrimage since the late 15th century, it is today the second-most-visited Jewish site in the world after the Western Wall with as many as two million annual visitors.