Ted Rall

I think this cartoon captures my feelings about the episode better than anything I've seen in print or any other media till now.
People who join a military or militia are doing so for the purpose of taking part in armed combat. As far as I understand it, all forms of military training are designed to foster blind obedience and faith in the correctness of ones commanding officers' orders to kill people, with a minimum of questioning who those people are and why they should be killed.
Military/militia life is fundamentally dehumanizing for the above reason. Is it any surprise that some of these people will turn on their own kind?
I think Einstein said it best in the poster I had on my wall throughout high school: