Boston Marathon runner leaves flowers on the doorstep of 8-year-old Martin Richard's home (Credit: REUTERS/Brian Snyder) http://www.theatlanticwire.com/national/2013/04/boston-marathon-explosions-day-two/64261/

Boston Marathon runner leaves flowers on the doorstep of 8-year-old Martin Richard's home (Credit: REUTERS/Brian Snyder)
http://www.theatlanticwire.com/national/2013/04/boston-marathon-explosions-day-two/64261/