And dismissing everything as "socialism" is to deny that humans have always despised hoarders and greedy rich people. They are unnatural monopolists.

Marx didn't have to invent that, he just tapped into it because the wealthy of the time ignored the plight of the poor and were grotesquely decadent. Same as at the end of the Roman Era, when Christ rose in a countermovement of personal sacrifice, community cooperation, the last shall be first, the rich will have trouble getting in to Heaven, but God hears the cry of the poor.

Christians have increasingly forgotten this lesson and now many love money more than God. How many would give up their Precious and follow Him?