whats behind terrorist

this one question has always fascinated me,most of the ppl use to think that terrorists are those uneducated ppl who can be influenced easily if yes then what is the answer to todays trend of highly educated professional terrorists,the only logical answer is sense of belonging,because these groups are able to instill sense of belonging before any other does they r able to influence this ppl. i feel somewhere we r to be blamed for this ,the best example i can give is at airports where if a person belongs to islamic community then he is checked more rigorously then any other person here is where we lose and they win we unconciously through act like this contribute to terrorism more than terrorist group themself.