The Aggression Scale

A decent action flick with the novel plot idea that its the kid doing the revenging. Also has the distinction of being one of the rare slaughter fests where one of the protagonists is so terrible you will root for the killers for half the film because the daughter is so obnoxious with her constant whining and sniveling and screaming you will root for her to die so other people can get away without her telling every living creature within 200 yards exactly where she is in the most shrill and annoying way possible.