Well, I agree that we must not ignore the threat he and other makes, but for now the best we can do about him is to ignore him. By that I mean the media and the avarage Joe, the police should of course ask him out and learn as much as they can so they maybe can prevent new attacks.
But getting captured was the goal of this man, he want to fight his cause from where he is now, he somewhat look on himself like a matyr, a saviors, I don't want to give him the attention and satisfaction.