I came across this story this morning. (The Girl in the Closet) I couldn't stop reading it. Such a sad, sickening, horrible case. Although the treatment was a million ways worse than my personal experiences, I found this line to be quite similar.
"Psychologically speaking, what happened to Lauren is called “scapegoating.” Parents single out one child to blame for all the family’s troubles and enlist others in the taunting and physical abuse."