I really don’t understand why anyone one would be shocked this happened. It was just a matter of time. I’m shocked it hasn’t happened at something like the Super bowl, National Championship game, something like that. What I am certain about is that no matter who or what was responsible, Obama will screw it up.
Too much security and on-site scrutiny at an event like that. It’s impossible to maintain that level of protection for an event that covers 26+ miles, though.