Klingons and Romulans living in peace together. The Romulan commander seems like a kind, caring person. Worf shows up and causes dissent among the children, and shows his prejudice towards Romulans simply because he is filled with hatred. Worf says he brought the children knowledge...knowledge of their true self...hatred towards Romulans in general. Worf it perpetuating his own racism. And the Romulans even send the children and Worf on a Romulan ship to return the children to the Federation. Pretty sure the Klingons wouldn't have done the same if it were Romulan children and the situation was reveresed.