This just sucks. How in the world does a modern handgun just go off? If it was an autoloader, was it locked and cocked and off safe and the mainspring just failed? How come if it was being carried concealed, it ended up pointing at the child at the same time? How was he carrying it? In a waistband holster, a shoulder rig, something else? How was the muzzle pointing in the direction of the child? And handguns are engineered that even if you drop them, the odds of the weapon discharging are pretty minimal. And if it was a 1911 varient, I think they all have the grip safety as well as the manual safety.
It does make sense that the weapon was loaded. If he is carrying concealed, it has to be loaded. That at least is the law in my state, where carrying an empty handgun with a concealed permit is illegal. Perhaps carrying an empty gun is legal in other states, although that makes no sense to me.
Aside from this guy being responsible for the death of his child, this kind of neglegence results in anti-gun laws and more meat for the gun grabbers. And if everyone was as idiotic as this guy, maybe they are right. I hope they prosecute him and put him away, and his carry permit (if he has one) is revoked for life. I wouldn't want him anywhere near me or mine. As for being scarred for life, he deserves that for taking his child's life away forever.