"[1] As their name suggests, the group's language, organization, and tactics were influenced to some extent by the global New Left.
The Jerusalem group was made up of Hebrew University students with less political experience, some of them recent immigrants who had come to Israel to fight in the Six-Day War.
[6][7] An important action by Siah members in 1972 is documented in the book My Home, My Prison by Raymonda Hawa Tawil.
Eighty members of Siah demonstrated in support of "Palestinian self-determination" and the villagers of Akrabeh.
The former faction, which called itself the "Blue-Red Movement" (blue for Zionism, red for socialism), became part of Moked.