High Quality Content by WIKIPEDIA articles! The Palestinian Popular Struggle Front (PPSF, occasionally abbr. PSF), (Arabic, jabhat al-nidal al-sha'biyya al-filastini), is a militant Palestinian organization. The group was led by Dr. Samir Ghawshah until his death in 2009. Despite holding a seat in the executive council in the Palestine Liberation Organization (PLO), PPSF is generally considered to have a very limited influence over Palestinian politics.