I think that since terrorism is in the media so much more now, people have lost a lot of security that they once had. (i.e. When we talk about increased airplane security people don't think "oh this plane is going to be a lot safer now!" they will think something like "oh no! what could happen? they can't get everyone") If anything it SEEMS like this war is calling out all terrorists to see what they can do. Which isn't smart. Though its likely that global terrorism hasn't increased, we are certainly more aware of it now.
Its almost like terrorism has become the latest fashion trend.
(These are my completly uneducated and likely bias opinions and reflect no one else)