Likely, their argument would be this:
Greater love hath no man than this, that a man lay down his life for his friends.
-John 15:13
However, contextually, that does not mean that a man takes food out of the mouth of his children to provide for a lazy man who won't work:
But if any provide not for his own, and specially for those of his own house, he hath denied the faith, and is worse than an infidel.
-1Ti 5:8
For even when we were with you, this we commanded you, that if any would not work, neither should he eat.
-2Th 3:10
So those who teach that communism is Biblical are not only ignorant of Scripture, but they are deniers of the faith; heretics and infidels who have no love of God in them because they love the things of this world over Scripture.
Love not the world, neither the things that are in the world. If any man love the world, the love of the Father is not in him.
-1Jo 2:15