Is there any need to enforce that commandment by violence ?" "Well," said I, "that is understood, and I agree with it; but how about crimes of violence?
would not their occurrence (and you admit that they occur) make criminal law necessary ?" Said he: "In your sense of the word, we have no criminal law either.

Let us look at the matter closer, and see whence crimes of violence spring.
By far the greater part of these in past days were the result of the laws of private property, which forbade the satisfaction of their natural desires to all but a privileged few, and of the general visible coercion which came of those laws.

All that cause of violent crime is gone.
Again, many violent acts came from the artificial perversion of the sexual passions, which caused overweening jealousy and the like miseries.
Now, when you look carefully into these, you will find that what lay at the bottom of them was mostly the idea (a law-made idea) of the woman being the property of the man, whether he were husband, father, brother, or what not.

That idea has of course vanished with private property, as well as certain follies about the 'ruin' of women for following their natural desires in an illegal way, which of course was a convention caused by the laws of private property.
"Another cognate cause of crimes of violence was the family tyranny, which was the subject of so many novels and stories of the past, and which once more was the result of private property.

Of course that is all ended, since families are held together by no bond of coercion, legal or social, but by mutual liking and affection, and everybody is free to come or go as he or she pleases.