This article studies the Sartrian commitments and seeks to show their coherence from a philosophical perspective. The question is whether there is a properly Sartrian line of commitment against racial and anti-Semitic discrimination. As such, the article begins by addressing the transition from phenomenology to Sartre’s intellectual commitment. The Sartrian commitment against anti-Semitism is an essential part and a turning point for the existentialist project. Then, from the journalistic texts and prefaces written by Sartre, he shows that the commitment against racism suffered by the black population is a step towards a fight against colonialism. Therefore, the article seeks to show that philosophy is a foundation for Sartre’s political commitment.