There are some photos that we can't look away from.
According to the BBC- Culture, one of Britain's greatest living photographer Don McCullin opens new exhibition of work in London.
Let's look his "Talking photos" from history.
A Lebanese family leaving the Martyrs Cemetery, Beirut, 1976.
A photo taken in Vietnam in 1968 reveals a man launching an object into the air, striking uneasy parallels with images of athletes.
Northern Ireland, The Bogside, Londonerry 1971: "It was inconceivable at the time that the violance would continue unabated for another 25 years.
Homeless Irishman, Spitalfields,London, 1970: in a 2012 documentary, McCullin recalled thinking this man looked like Neptune as he photographed him.