Yes... first you have to correctly identify the murderous bastards - before you can nail them...
It's disgusting of course - especially when you realise the choice of target was quite possibly deliberate. There's a school of thought among this particular brand of fundamentalist Islam that young girls enjoying 'promiscuous' music (promoted by 'Jewish entrepreneurs' as part of a secret conspiracy) is a threat to public morals and an affront to god, punishable by death...
This is how these deluded fuckers think. But picking out the deluded fuckers from all the normal people is not easy. Sometimes their own families have no idea what they are up to until the police knock at the door.