In the novella "Child of Chaos", Damian has an argument with Lucian about him executing Ygerna. And I do agree that Damian does have a bit of a point. Just because the Divine is generally a force for good, it doesn't mean he's perfect, an can't make mistakes. A flawed hero/god-figure is more interesting than a perfect one.
However, Damian's actions after that point have just gotten worse and worse. He is NOT a good guy, and Ygerna is not a naive innocent.
Rhode is a fanatic. She truly believes that all dragons are evil, this belief is unshakable. At the time Rhode confronted the new Dragon Knight, the Black Ring had been quietly hiding out for 50 years. It wasn't an active threat. People are flawed, and sometimes good guys aren't on the same side.
