Why would it be a joke?
If a member of the Taliban had caught a wounded soldier, dragged him into a tent, waited until the helicopters couldnt see anything and then had a discussion with his pals about whether to kill him, when to kill him, who would kill him and how to kill him before shooting him in the chest because its less obvious than shooting him in the head and subsequently caught laughing about it, ordering his pals tell no-one and admitting in full knowledge to breaking the Geneva convention as it had all been filmed, then the press and media would be highlighting a campaign pushing for a murder charge to be dropped and poor heroic T. Talibans release from jail on lesser charges or even a full retrial or aquittal?