This kind of thing, as any child abuse, makes me so angry the cave-woman comes out in me
I would like to see these people castrated and shot. Never mind locking them up in prison where they get 3 solid meals a day and Sky TV - put they up against a wall!
Of course social services do nothing - they are either too scared to deal with most abusive parents or cannot do anything as the law only permits certain actions.
Sorry, I'll climb down off my soapbox now...