@Setanta,
In your rush to defend the USA's proportion of crazies, you miss the point of my post.
We have more than our fair share of disaffected muslim youth, who sometimes try to blow people up, to be sure.
They are protesting the armed invasions of Afghanistan and Iraq, of which you doubtless have heard, and are discussed on other threads.
You may be right to chide me about my earlier assumption. It may be that since American crazies can easily arm themselves with state-of-the-art equipment to cause multiple deaths, they attract the headlines.