Anyone can get into a truck and mow people down. An old man did it on the Santa Monica Promenade in CA a decade ago. The guy could have just been crazy. "Inspired by" is very vague. If the guy were a Christian, would we crack down on Christians? Would we test all Christians, as Newt Gingrich now wants to do with Muslims?

A security expert on CNN nailed it yesterday. The truck should have never made it that close to the closed off street. You have to have the perimeter secured with large events. Security has to know everything that is allowed in or out. Every vehicle has to have a permit, parking has to be organized. No vehicle should be unaccounted for.