The parents have to learn that the child should not be insulted, humiliated, condemned. If you want to help him, love him more. Appreciate what is good in him rather than emphasizing what is bad. Talk about his goodness. Let the whole neighborhood know how nice and beautiful a boy he is. You may be able to shift his energy from the bad side to the good side, from the dark side to the lighted side, because you will make him aware that this is the way to get respect, this is the way to be honored. And you will prevent him from doing anything that makes him fall down in people's eyes.