>>23338721
>The novelization suggests that Shinn doesn’t lash out at Cagalli out of pure hatred, he also wants her to fire back and stand up for Orb’s ideals. Essentially, “my family died because of Orb’s ideals, why won’t their head of state defend them now?” forms the basis for him to start really hating her.
This is contradicted by what we see on the series. Shinn hates Orb and its ruling Attha family for those very ideals. He used to believe in Orb's ideals, but after losing his family, all of that rhetoric is now perceived as weakness. Their spiel can be reduced to "neutrality = peace", but that's an idea that was violently destroyed, so Cagalli insisting with that crap is the epitome of nonsense on Shinn's mind.

Think about it: Uzumi refused to yield to Azrael's demands, and Shinn's family was killed. Ergo, if Orb had pushed aside the idealism of its leadership and accepted geopolitical realities (for instance, by officially joining forces with PLANT's Siegel Clyne), they would been alive.

Also, Cagalli is the one that's out of line berating the ZAFT guys while she's a guest on their ship.