His expression was one of pure heartbreak.

"They put children through this?"

If there had ever been any chance at all of him thinking the people of the Capitol weren't inhuman monsters it had been dashed by that little factoid. He'd make his mental exceptions if he met the right people, but the look on his face of empathy and compassion melted to one of disgust and pure consuming hatred. Joan was the first to see it, the fire in his eyes, the desire to see them all burn. She wasn't going to be the last.