La Cause du peuple was a French newspaper. The newspaper was founded on May 1, 1968 by Roland Castro and was the press organ of the party Gauche prolétarienne (GP).
When the GP was banned by the Gaullist state in 1970, promoting La Cause du peuple and selling it on the street became a badge of honor for left-leaning intellectuals such as Jean-Paul Sartre, Simone de Beauvoir, Claude Lanzmann, Jean-Luc Godard and François Truffaut.