Cruel Act - Child Abuse

Today, I read an article in today's newspaper about child abused case. Don't know why and don't understand why these people have a such cruel act towards the children or babies. Let me mentioned a couple cases. 10 months old baby girl was hanged at the back of the wardrobe and leaving her in a freezer by her babysitter. Besides that she has been kicked, hit on the head, thrown and shaken with such vigour her head rolled back and forth. She dies on non-accidental brain injuries. Another case was witness by another child that a 3 year old child was slam dunked on the ground, choked and put in a hot dryer until her head bleed. She has been put on clothes line and spun until she fell off to the ground. Cruel act???? Done by who???? It seems by close family members.. Cant believe it. The child mother was charged with manslaughtered. Its sad to read all these child abuse cases. These people (pervert) should get a heavy punishment for the cruelty act.