The common cause !
Terrorism has no religion, colour or race .Thats why it is an evil to all ,and the first who are getting the brunt of it are the people of Afghanistan . Just look at the casualty figures to have an idea about the extant of it .So to label it as just Muslim killing may be correct in description but not in the sense it is actually targeted towards all and we need all Muslim to be on our side to fight it together , not alienate them with this sort of labeling . Finally you will not call the pilot who blow up 135 civilian in mazer sharif a christian pilot killing Muslim civilians !! So lets keep focus on the enemy of all and not get in to fight between us, as I presume that we all have the same fight and when its won it will be for the joy off all not the few .