Shootings, who do we blame ?

The recent school shooting in Connecticut was indeed a tragedy, I can't fathom the grief the parents have. You know many of them have a Christmas tree and presents already wrapped under it's branches for some of these children. I know Christmas morning for them will never be the same for the rest of their life.
The most asked question is who or what do we blame?  Some blame the gun, mostly because they have an agenda to disarm the American public, which is fairly stupid when you think about it. With that logic we could blame bad police shootings on the gun as well or maybe wars (although some do that) but we have been fighting wars and killing long before guns came along.
Some blame God, which is absurd when you think we as a society have kicked God out of every aspect of public life  like schools, government, public property etc.  So we ask why would someone do this ? many will blame his upbringing and all kinds of social issues, some which may factor in to a degree but I believe we have raised and bred a whole generation of people who are taught via government schools, TV, movies etc that there is no moral absolutes and that we are only responsible for ourselves and we should do what makes us happy and seek imitate gratification if needed. When this is accomplished in a person they essentially become no different than an animal, they will prey on the weak and helpless with no regard for anyone else.
I do however believe as hard as someone may try to act as if they are no different than animals something clicks at some point and they realize they do have a soul thus the reason some commit suicide after such a horrendous crime because you never see a lion commit suicide after killing a baby goat. 
 John Adams said in 1798  "Our Constitution was made only for a moral and religious people. It is wholly inadequate to the government of any other."  
Maybe we as a society need to start putting down the "animals", just a thought.