Yeah, David's guessing the guy is just a miserable punk.

"You think I don't want to go home?" David counters, shifting into a defensive stance, his glasses being covered with another band of light to protect the sensitive area. "But no, it's okay if there's genocide if you're the ones doing it, right? Doesn't matter that what happened here was an accident that hurt EVERYONE. If we could go home, many of us would."