This sounds like a nice idea for a day or two, but I think how it presents in reality could be rough. The power grid might be down for a few days causing food spoilage, it could be taking down banks so people don't have access to their money, it could be screwing up IT at a hospital which interferes with treatment and care, we may not be able to fill up our gas tanks... I don't think it'll be "nefarious-gun-on-a-robot-dog" any time soon, but rather something that still causes major major issues.