What is wrong with the society of Camazotz? In Engle's 'A Wrinkle in Time'

On this
planet, the citizens have relinquished their free will to IT, a hideous pulsing brain which
controls everything, even thought.  Everything on Camazotz is regulated by IT's headquarters,
even the play time of children. For example, to their horror, the Murry children along with
their friend Calvin discover that a little boy bouncing his ball out of rhythm with the other
children on the street is later "reeducated" to conform to the norm. Even Meg's little
brother is seduced and then hypnotized by IT until finally her unrelenting love for him brings
him back.