I need an explanation on the effect of child abuse?

I need an explanation of the effects of child abuse?
The world is currently in a scene with a very frightening event for small children, why not a predator has become an outbreak for young children. Lots of events are on the show on television and print media about child abuse or known child predators. Child abuse is strictly prohibited in many countries, one of which is Indonesia, many actors are now pouncing behind bars over the treatment. Child abuse is very bad for the child, because they do not know anything about sek and even they are very afraid of it, so now we as parents should keep our baby not to fall by predators to prey on our children. With parental supervision to the child and give knowledge about sek to the children so that they are not in the stab by a child predator.