This is kind of like the flying imams incident. Deliberately create a ruckus to attract the attention of the authorities. Make them look paranoid and foolish after it turns out to be a false alarm, then feign victimization and cry islamophobia. The little brat knew his device looked like a bomb, and that was the point. Now the little muslim brat is a martyr and celebrity. Also people will be less inclined to say something if they see something suspicious. That is the other purpose of set-ups like this.
Posted via Blogaway