If you’re a kid and you’re scamming, selling drugs, robbing people or whatever foolishness you’re partaking in. Age and being a kid should come into play and the goal ultimately should be to help the kid and try to steer them in the right direction before it’s too late. Those crimes, while they have a victim, the damage caused is ultimately repairable.
But when someone’s life Is taken as a direct result of a crime you committed. The punishment should be harsh. That man is never going to live again. People lost a parent and loved one because of this. They weren’t trying to kill the man, but him dying was a possibility if the robbery went wrong. Same way those girls potentially getting shot and killed had they tried the wrong driver and got a driver who was strapped was a possibility also.
Hopefully they ultimately show sincere remorse. Not just being upset because they're getting in trouble. But they should be punished harshly too given the circumstances of what they did. If that man didn’t die, go easy on them. But that all goes out the window when someone died as a result of your actions.