Many argued that the horror of the Nazi death camps could not be written.

ECONOMIST: William Styron

Many people had horror stories of how they cheated death by clinging on to trees or hiding within temples.

CNN: Tsunami tragedy: Your e-mails

Since then, residents of Newtown have been dealing with the arc of life in unimaginable ways -- of death and loss, of pain and suffering, of shock and horror, of beginning to heal.

CNN: A message from beyond: Peace in Newtown

With his camera, he bears witness to the bearing of witness and, revisiting the sites of the unfathomable horror, depicts, to the limits of consciousness, the experience of life in the presence of death.

NEWYORKER: Shoah

When a video-tape showed a group of blacks beating a white truck driver, Reginald Denny, almost to death (one of them did a celebratory jig afterwards), the world recoiled in horror.

ECONOMIST: Trouble in paradise

The brutal gang-rape and death of a 23-year-old female medical student in India has prompted outrage and horror around the world.

FORBES: Connect