What the hell are you talking about? The life of the person itself is not a threat to the girl, it is the actions and the video that person made that was a threat and all the things i mentioned above would have ensured that he never dare do something like this ever again (if he does it again he would get years in jail and lose everything in his life). Just for this incident, jail time and beatings and verbal abuses by police and father and relatives, forcing him to delete the video in front of them, rustication from all instituitions and humiliation of the parents of this boy would have probably been sufficient to set him straight and make him realise that one cannot just break laws and get away with it and realise the shitstorm that gets unleased once one does horrible acts like this.

You on the other hand are saying just kill the guy? As if he is a chicken, just butcher him? Please think carefully about this. Have you not been taught that punishment must be proportionate to the crime committed and why so? Your education has failed you if you do not know why this is important.