Zombie Cliché Lookout:

Assholes, if they’re assholes long enough, are going to get called onto the carpet for their actions. How they handle this confrontation is going to help develop them as a character. If they’re shocked and horrified to see their actions pointed out to them, we’re probably looking at a character who is in the middle of a redemption arc. However, if they defend or completely dismiss their actions, this is a character who is either irredeemable, or who requires a rather nasty wake up call.