This question already has an answer here:
I remember finding this book by chance on Wikipedia a long while ago. I'm writing a piece and want to reference this story.
In this book (published most likely around the 1970s and 80s) in the then future a Cold war divide became more intolerable. Someone has the idea to send a group of people (probably infants) out of Earth somewhere to isolate them from Earth to isolate them from the politics and cultures that fueled the war. The idea works. The resulting colony is a peaceful one with no attachments to any political ideology or religion on Earth. When explorers from Earth find this colony and try to make them join their cause it is an exercise of futility. No matter how much they try to convince them, the people of the colony can't fathom their logic. Through this exercise the explorers finally see their politics as nonsense and decide the rebel against their powers at be.
Two other things I remember about this book is that in it America became a dictatorship and that the author was inspired by the Troubles in Northern Ireland.
I have tried to look it up on Google, but only get junk, like "50 sci-fi stories you must read" and so on.