Ankara, Turkey Gunman Mevlut Mert Altıntas gestures after shooting Andrei Karlov. Photographer Burhan Ozbilici said: ‘The gunman was agitated. He walked around the ambassador’s body, smashing some of the photos hanging on the wall. I was, of course, fearful and knew of the danger if the gunman turned toward me. But I advanced a little and photographed the man as he hectored his desperate, captive audience. This is what I was thinking: “I’m here. Even if I get hit and injured, or killed, I’m a journalist. I have to do my work.”’

Photograph: Burhan Ozbilici/AP