There is a generally insightful post here which tries with only partial success to explain the fact that the Jihadis are only a small minority in the Islamic world. Most Muslims just get on with their day-to-day lives as we all do and ask little more than to be left alone.
So where do the Jihadis come from? The answer is really simple. The Jihadis are people who are frustrated enough to act upon what Western Leftists say. A corrosive dissatisfaction with the world they live in is what characterizes Leftists and they express that dissatisfaction vociferously day in and day out. And the Jihadis are usually educated people who have often heard that constant angry wail.
And Muslims have got more to be angry about than most. By most criteria, Islamic societies are the anus of civilization. They are brutal, backward, stifling, sexually repressive and poor. They contribute nothing to the world and function principally as parasites on the West. But it is a great human failing to blame others for your own problems and the Jihadis grab with great satisfaction what the Leftists say: That all the ills of the world (including the ills of the Muslim world) are the fault of America and the West.
That is of course a thoroughly stupid message and it is notable that you usually seem to need a Western university education to believe it. The 9/11 bombers and the British doctor bombers were all highly educated people who had lived for years in the West. They were not Egyptian peasants.
So the Jihadis are simply people who are dumb enough and frustrated enough by their own societies to put into practice what the Left preaches. Leftism is the real enemy egging them on, not Islam. It is no wonder that the Left does all it can to protect them.
(For more postings from me, see TONGUE-TIED, EDUCATION WATCH INTERNATIONAL, GREENIE WATCH, POLITICAL CORRECTNESS WATCH, FOOD & HEALTH SKEPTIC, GUN WATCH, SOCIALIZED MEDICINE, AUSTRALIAN POLITICS, DISSECTING LEFTISM, IMMIGRATION WATCH INTERNATIONAL and EYE ON BRITAIN. My Home Pages are here or here or here. Email me (John Ray) here.)