Big happening (~ 1962?)

Left to right. Sitting: ?, ?, ?, Mendel Ditman, Vera Ditman (Majorov), Henni Olkenitski (Ditman), ?, Lasar Rosenberg.
Upper row: ?, ?, ?, ?, Viktor Ditman, ?, Herz Lutrin?, Miron Olkenitski.
Second row from top: ?, ?, ?, Jeremias Krakusen, ?, Miia Goldschmidt, ... last at right - Refol Põld (Ditman).
Third from top: ?, ?, Liivia Krakusen, ..., Maya Epstein (Baiburin), Benno Epstein, ?
Fourth from top: ?, ?, ... Meri Schagal, Ilja Schagal