if you look the muslim shrines that were attacked most of them are sufi shrines......malegaon shrine, hazratbal, charar-e- sharif, ajmer dargah all are sufi shrines...sufism is an diluted form of islam which accepts religious differences....the sufi pop artists are very popular in west......so you cannot say terrorists have no religion, but they do have religion they are wahabbis, salafis, sunnis, deobandis.......