You are suggesting that there isn't a correlation between violence and moral ambiguity with islam. I would disagree, and for the same reasons I provided in another post (views on women, homosexuality, lying aka "taqiyya" etc.). It would be bigoted to suggest that one type of people is bad, but I think it's delusional to deny that the culture surrounding islam contributes to events such as this one (and the general occurrence rate statistics of rape, violence etc).