Just some suggested reading, I don’t raise Wikipedia to the level of a scholar’s reference, but this bit is correct enough and easily accessible.
Dystopia : A dystopia (alternatively, cacotopia, kakotopia or anti-utopia) is a fictional society that is the antithesis of utopia. It is usually characterized by an oppressive social control, such as an authoritarian or totalitarian government.
NOTE: I’ve left the links intact for those who wish to explore more.
The point being that the Peacenik ideal is fraught with realistic problems that idealism and effete words ignore. I have addressed some of the most obvious here, but …
Although the above reference uses the word ‘fictional’ one only need to look at the former USSR as a real world example of a dystopia.