The Socialist Party of Indonesia was a political party in Indonesia from 1948 until 1960, when it was banned by President Sukarno. Wikipedia
Founder: Soetan Sjahrir
Founded: February 13, 1948
Leader: Sutan Sjahrir
Ceased operations: August 17, 1960
Dissolved: 17 August 1960
Political position: Left-wing
Youth wing: Gerakan Pemuda Sosialis