The OP is interesting but I suppose I'm excessively pragmatic:
Those in charge of a society may *believe* utopia is possible
and guaranteed but I cannot imagine a situation where a known,
guaranteed Utopia wasn't just something that seemed great on
paper but in reality would cause unforeseen problems. Limiting
civil liberties for a greater good is fine when there is
consensus, but if the PROCESS is forced and does not have
consensus, there will be war of some kind.