Yep. Without a doubt, mob action in cases like this one begs that a father with a gun should have used it to defend his family and himself from these scumbags. If we thin out the criminal gene pool enough, do you think that we could hope that criminals might become a thing of the past? We can only hope so.
Also defines why we should all carry high capacity firearms with more than 10 cartridges. A 5 shot snub nosed revolver would not have had enough ammo in the gun to be effective for a realistic program of defense against 8 determined attackers.