The narrative has to ease our pain and make us secure.
So the narrative will be
The even in Boston is limited in time and space, it's over.
The investigation is in the capable hands of federal, state and local authorities, who will catch the people who did this no matter how long it takes...etc.
The injured are in the hands of our best surgeons, nurses etc.
Then there will be a bunch of stuff that allows "us" to feel good.
The dead and injured were heroes, representatives of the best of America
The first responders were selfless and brave, running toward the sound of the explosions....
The marathon runners and their families represent the best of America.
Our hearts, prayers and thoughts reach out the injured and their families...
The one(s) responsible for this evil act are bad people but you shouldn't blame a religious group, political party, or ethnic group.
The ones responsible were defective in one or more than one way, which clearly makes them other than the good and heroic WE mentioned above.
Pundits will fill in whatever descriptors they want, but being unable to blame religion, politics or ethnic strife, most will fill in with some terminology referring to mental defects....because whenever something happens that can't be immediately understood it must be...well...CRAZY!
An that concept will appear in various forms from soft bigotry like Oswalt's miswired minds through "deranged" which Ed Shultz has used in the past 15 minutes to harsher sounding adjectives.
Members of our society, including people on DU, have no more qualms about employing demeaning discriptors of mental illness to describe the still unknown and undescribable perpetrators of the Boston bombing than Mark Twain had in calling Jim a ni**er in The Adventures of Huckleberry Finn.