From Wikipedia: "In Mormonism, the United Order was one of several church programs established to manage and administer the Law of Consecration (a voluntary form of Christian communism/communalism). The United Order was an egalitarian community designed to achieve income equality, eliminate poverty, increase group self-sufficiency, and create an ideal utopian society Mormons referred to as Zion. It is not practiced within Mormonism. Members who chose to enter the United Order would deed (consecrate) all their property to the United Order, which would grant back an "inheritance" (or "stewardship") which allowed members to control the property according to their needs, but not own it. At the end of each year, any excess that the family produced from the stewardship was given back to the Order. The Order in each community was operated by the local Bishop."
The early Christian church had a failed attempt at a Communistic type community (see Acts) and the pilgrims on the Mayflower did so as well.
What's your point?
And the Puritans tried to live communism too. Does it mean we are all communists?
What is wrong with Christian communalism? It's the way the Church operated for the first couple of centuries...and very successfully.