Garrett Graff / Doomsday Scenario : A quick analysis of last night's shooting   —  So far, it appears the system worked as intended. … I had intended to write today about what a travesty the White House Correspondents Association dinner was — and how embarrassed every single journalist who attended should be … RELATED: New York Times : D.C. media parties go on, despite news of gunfire.   —  President Trump was rushed from the stage of a dinner hosted by the White House reporters' association.  Trump said a Secret Service agent was shot at but “saved” by his bulletproof vest.  The F.B.I. said a suspect was in custody.…