[DannyTN]

I suspect there are a lot of utopian visions that have been put into effect in a smaller scale that did not result in mass executions. They range from monasteries during the dark ages, hermits, 60's communes, nudist colonies, etc. The difference is that these utopias were all voluntary.

The utopias that result in mass executions are forced utopias. The same evil desires that drive someone to force their concept of utopia on someone else also drives them to be ambitious to continue expanding their fantasy, until it's worldwide.

[katana]

Agreed, hence the mention of the utopia being put into political effect. To be part of a utopian order requires the members to be of one thought, and that requires voluntary or forced submission to the group. The larger the group, the more likely mass violence seems to be.