George laughed and leaned back a bit in his seat. "Yeah, I guess it was, wasn't it? We couldn't rightly sit back and just take all of that. She was turning the castle into a prison. I don't think any of the founders ever wanted Hogwarts to feel like that. We didn't want it to feel like that. And with Voldemort back... well, all the more reason to stand and fight. We never had any doubts that that was what we would do."
For a moment he was almost nostalgic for the days of his last year of school, when Umbridge was the biggest immediate enemy, before the war had really broken out, before he and his family had had to go into hiding. "Ah well. We're here now, yeah? And life goes on." But he didn't want to think down that line too much, because it always ended up jack-knifed in the same place of discomfort.
"Anyway, we had these coins, right? Came right in handy in 1998. Voldemort and his army attacked the castle. We were able to use the coins to communicate to each other -- so we could come back to the castle and fight. Hermione came up with them. She's a right genius," he said proudly.