Percy made a little noise. "I suspect your parents influenced you more than you want to admit. That's what parents do." Parents shaped their children, whether intentionally or not, through actions, through behaviours, through words.
"Yes, I'm aware, although I highly doubt that it was your own idea," Percy remarked. How many sixteen year olds decided to kill their Headmaster? And followed through with it? And that didn't make it better, per se, but it lessened the horror of it. "You don't need to convince me that you've done horrid things, I already believe you on that." He had a very good idea of some of the things that had gone on during the War, especially during the time when the Death Eaters had ruled the Ministry.