What kind of message does a terrorist intend to send by bombing a sporting event!? I can sort of understand the implied meaning of slamming planes into the WTC but when the topic of bombing the olympics comes up... and of today's atrocious events I just find myself grasping to understand the underlying meaning. Maybe Boston's security was weak? I can't fathom that since the USA seems pretty competent these days about having lots of officers and security on the ground at these kinds of events. Perplexing, gruesome and disappointing.
It's either the work of a psychotic madman, or a terrorist group or -- heaven forbid -- a false flag attack. What really disturbs me is the small time interval between the two explosions, it smacks of coordination or remote detonation or both.