Since 9/11 numerous books have been written about religiously motivated terror. Many have been vitiated by the excessive keenness of their authors to play down the role of Islam in motivating it or else to exaggerate that of other religions in instigating it. One such author is Mark Juergensmeyer. Widely heralded as an authority on "Christian terrorism", Juergensmeyer has described Oklahoma City bomber Timothy McVeigh as a Christian terrorist, without any evidence religion entered into his motives for carrying out the bombing. He has similarly denied that the Muslim faith of the Tsarnev brothers inspired them to carry out the Boston…