Communism doesn't work! The evidence is overwhelming. The reason? It goes against human nature. This is a perfect example that nothing is impossible with God.

 Now the full number of those who believed were of one heart and soul, and no one said that any of the things that belonged to him was his own, but they had everything in common. And with great power the apostles were giving their testimony to the resurrection of the Lord Jesus, and great grace was upon them all. There was not a needy person among them, for as many as were owners of lands or houses sold them and brought the proceeds of what was sold and laid it at the apostles' feet, and it was distributed to each as any had need.

Acts 4:32-35 (ESV) link to Bible Gateway passage