Sorry to advise you Lapdog, but just like so many other Muslim nutjobs, that bloke WAS indeed a product of his MUSLIM instinctual (stunted if you like, due to fractured morals) upbringing. There are countless other examples of his type of deep-seated violence on a month to month basis globally inflicted by Muslims who might or might not have attended a mosque or follow every word.
Unlike apologists who are far too afraid to point the finger at Muslims, I lay the blame on a large number of clerics who perpetuate the vicious teachings (or if you prefer, interpretations) of the Quran.