Although most people are not likely to be evil at heart, forcing others to behave in certain ways does nothing to create a perfect society. A review of history shows how wrong these plans go. Look at the histories of Russia, China, and Cuba for three examples.
So what does this have to do with conversion? Conversion to the gospel changes people from the inside out, rather than from the outside in as communism, socialism, and Marxism attempt to do. Look at these scriptures from 4 Nephi 1.
2 And it came to pass in the thirty and sixth year, the people were all converted unto the Lord, upon all the face of the land, both Nephites and Lamanites, and there were no contentions and disputations among them, and every man did deal justly one with another....Does that not describe a truly good society that yet is free? There was no coercion, no resentment, no confiscation of one's goods to give to another. All was shared freely and willingly in love for God and for their fellowmen. That is the ideal and it cannot be forced.
15 And it came to pass that there was no contention in the land, because of the love of God which did dwell in the hearts of the people.
16 And there were no envyings, nor strifes, nor tumults, nor whoredoms, nor lyings, nor murders, nor any manner of lasciviousness; and surely there could not be a happier people among all the people who had been created by the hand of God.
17 There were no robbers, nor murderers, neither were there Lamanites, nor any manner of -ites; but they were in one, the children of Christ, and heirs to the kingdom of God.
Naturally enough, conversion to the gospel also cannot be forced upon people. It can, however, be spread by teaching and example, by love and patience. And is not this the best way, the only way, to develop a society of equality and justice and kindness and generosity?
As each one of us, individually and from the heart, becomes converted unto the Lord, Zion grows a bit stronger. As our example spreads to those around us, Zion grows a bit stronger still. We must live in a free society in order for this to take place. As He always does, God knows what He is doing. The plans of men, the philosophies of men, cannot replace the plan of God, our Heavenly Father, for all His children.