In its later years it was the mouthpiece of the left wing of the Sarekat Islam and its editors Mas Marco Kartodikromo and Semaun were instrumental in the rise of the Communist Party of Indonesia.
[1] He, and the owners Hoang Thaif & Co. agreed to sell it to the early Indonesian nationalist organization Sarekat Islam in 1913 or 1914.
It had a more moderate political line until 1917 when the owners gave editorial control from Mohammad Joesoef to Semaun, the radical protégé of Sarekat Islam leader Tjokroaminoto.
[3] Some of Mas Marco's novels were originally serialized in the pages of Sinar Hindia such as Semarang Hitam and Student Hidjo.
[4] In 1924 the paper was relaunched as Api (Malay: fire) and more explicitly tied to the Communist Party of Indonesia.