Possible Clues:

• Citizens of Thomas More's perfect state
• Visionaries
• Perfectionists
• Citizens of Thomas More's perfect country
• Citizens of ideal state cause pain to us
• Citizens of ideal but fictional state
• Idealistic campaigners spin out a reform
• In a perfect world, you'd find them
• Those who look for the impossible from highest man in America?
• You'll find them in a perfect world