Two days after a deadly attack on Turkey's largest airport, there has been no claim of responsibility, but Turkish officials believe it is the work of Islamic State.

Forty-two people died, and hundreds were injured when three gunmen, strapped with explosives, opened fire. The men later blew themselves up.

Since then, grainy footage of one of the suicide bombers has surfaced. Some outlets have run the clip in its entirety, but others have held back.

Who decides what we see and hear in the media? And what impact do images and sounds have on the way we understand a tragedy? 

Take Two put that question to Mike Ananny. He's a professor of communication and journalism based at the USC Annenberg  

Press the blue play button above to hear the interview.