For those oppressed on grounds of race or class, or for those fighting against colonialism, existentialism offered a change of perspective — literally, as Sartre proposed that all situations be judged according to how they appeared in the eyes of those most oppressed, or those whose suffering was greatest. Martin Luther King Jr. was among the civil rights pioneers who took an interest. While working on his philosophy of non-violent resistance, he read Sartre, Heidegger and the German-American existentialist theologian Paul Tillich.
