"...It's just unfortunate that none of these other hunters had the balls (and the shooting ability) to take this punk out when he started blasting."
You said it! What the hell good is a right to bear arms for self defense if these people, all of whom were fully-armed, didn't have the wit and presence-of-mind to kill this guy when they had the chance!
One does't hear the round coming during an ambush...it ain't like TV.....and...it ain't Iraq....it's Wisconsin.