As other progressive and anti-IJT groups like Baloch Students Organization (BSO), Pakhtun Students Federation (PkSF) and the nascent All Pakistan Mohajir Students Organization (APMSO) formed the United Students Movement (USM) at the University of Karachi, PSF got together with NSF to form Taleba Ittihad (TI).
IJT had armed itself with sophisticated weapons; soon USM and TI too began arming themselves.
But shortly before the formation of USM and TI, a loose group from among PSF emerged in Karachi led by Salamullah Tipu.
Tipu who belonged to a lower middle-class Urdu-speaking (Mohajir) family in Karachi had begun his career as a student politician in 1973 with the IJT.