Newsweek‘s 1968 issue — “the year that made us who we are” — has a strong, finely woven article called “The Worst Week,” about the five-day span in which LBJ announced his decision not to run that year and the assassination of Martin Luther King. This mp3 of Kennedy delivering his famous speech in Indianapolis in which he announced King’s death is still pretty moving. Who among the current Presidential candidates could have delivered an impromptu speech of this calibre if they’d been in the same position? Not Mitt Romney.