In "Birthright", Worf encounters a "prison", what in fact became a community of Romulans and Klingons living in peaceful coexistance.
What right does Worf have to impose his/Klingon way of life to the youth there? It's completely unethical and violates the Prime Directive. The Klingons and Romulans there took a huge sacrifice being there and he practically barges in and imposes his view of life.
To quote Tokath:
No. You showed them what you want them to be.