Boston horror shouldn't cause loss of faith in human nature: Ezra Klein
                                
                                
                                    (Newser) -
                                    The Boston Marathon bombing has shaken America, but it shouldn't shake people's faith in human solidarity, which is at its best at marathons, writes Ezra Klein in the  Washington Post . He points to the story of 1967 Boston Marathon runner, Kathrine Switzer, as recounted in  The Nation . Women...