Had his anger been directed at both the people who beheaded his son as well as the President, I would have chalked it up to mere grief. However, he went out of his way not to demonize those who actually took off his son's head and used the death to play politics.
I have to agree with kenth. This man "used the death to play politics."
That is a good point. But you have to remember one thing about liberals: Like adolescents rebelling against their parents, they choose for an enemy someone who they know will not actually hurt them. They live in deep denial of the true Islamofascist threat. But wanting to feel "empowered," courageous, proactive, etc., they use their freedoms to lash out at the culture that gave them that freedom. It's so strange that these (in their own minds) enlightened, educated, intellectual types would not understand how incredibly immature their behavior is.