Today, Communism is often seen by many Christians as being completely at odds with Christianity. While there are aspects of it that are indeed at odds with Christianity (and religion in general) its focus on the idea of social justice and equality for all are ideas that Christians advocate through their beliefs. Today there are those who call Jesus a socialist or Communist, and there are even Christian Communist groups.
Suppose then that, we'll go with the Third Great Awakening in the United States, that a movement began to spring up that tied Communism to the Christian faith and the Social Gospel together into a single entity pushing for social and economic justice for all.
What effects might this have had on the United States? Might it be able to gather a large enough force to push for major social change in the United States, more so then it did originally?