Boston Marathon Bombing (GRAPHIC PHOTOS) -A victim of the first explosion is helped on the sidewalk of Boylston Street, after two explosions went off near the finish line of the 117th Boston Marathon. (John Tlumacki / The Boston Globe / Getty Images)
YouTube Video: "Boston Marathon Bombings" This video was captured by an amateur photographer at the Boston Marathon. This video was then picked up by almost every major news network and used repeatedly throughout the news cycle. This video showcases how YouTube can be a citizen journalists powerful too.