So they hanged him. Good riddance. So they showed it on TV. Good. So the guards taunted him. Good. Who gives a rat's ass how he was treated. How does he have the right to be treated humanely? The man was a monster and didn't deserve to see the light of 2007.
Incidentally, children see a lot worse on television than some old geezer being hanged from the neck. Stop being pussies about it. One of the reason there's so much nonsense in the world today is because children are overprotected.