Nothing is easier than to give Christian asceticism a Socialist tinge. Has not Christianity declaimed against private property, against marriage, against the State? Has it not preached in place of these, charity and poverty, celibacy and mortification of the flesh, monastic life and Mother Church? Christian Socialism is but the holy water with which the priest consecrates the heart-burnings of the aristocrat.
Marx and Engels, The Communist Manifesto
Fun fact: the original pledge of allegiance was written by a christian socialist, and it did not include "under God":
Bellamy was a Christian socialist who "championed 'the rights of working people and the equal distribution of economic resources, which he believed was inherent in the teachings of Jesus.'" In 1891, Bellamy was "forced from his Boston pulpit for preaching against the evils of capitalism", and eventually stopped attending church altogether after moving to Florida, reportedly because of the racism he witnessed there. Francis's career as a preacher ended because of his tendency to describe Jesus as a socialist.
Fun fact: the original pledge of allegiance was written by a christian socialist, and it did not include "under God":