By Milton Nkosi
South African photographer Sam Nzima dashed to the scene of a shooting during the June 1976 students' uprising against apartheid just in time to see a child falling to the ground.
It was when another student picked up the dying 13-year-old Hector Pieterson that Nzima clicked to take one of the most iconic photographs in history, becoming a symbol of the brutality of the white minority regime, which flashed around the world.
In a 2010 BBC interview, Nzima, who has died aged 83, recalled: "I didn't know who it was. I saw a child falling down.
"I rushed there with my camera.
"And I saw another young man pick him up and as soon as he had picked him up, I started shooting the pictures.
"It was a very high risk because this picture was taken under a shower of bullets," he said.
Born in August 1934, Nzima, the son of a farm labourer, was fascinated by photography after a teacher at school had shown him how to use his camera.
A young Nzima bought his own camera and began taking pictures in the world renowned Kruger National Park.
But his own story also illustrated the injustice of the apartheid regime which the students were protesting against.
His father's employer, a white farmer, forced him to work in the Eastern Transvaal, now known as Mpumalanga.
After nine months' hard labour, he ran away to the country's commercial hub Johannesburg, where he found a job as a gardener in one of the posh suburbs.
In 1956 he was employed as a waiter at the Savoy Hotel and began to take portraits of his fellow workers.
He continued honing his skills even after he moved to the Chelsea Hotel and that's where he began reading the Rand Daily Newspaper.
He was transfixed by stories that were critical of the apartheid government written by the late award-winning journalist and editor Allister Sparks in the newspaper.
Nzima started sending his own pictures to The World newspaper and also submitted a story he had compiled while travelling on a bus.
The editor was so impressed with his work that he employed him as a full-time staff photojournalist in 1968.
In 1976, high-school students began to protest against being forced to study in Afrikaans - seen as the language of the apartheid regime.
This breathed new life into what had become a lethargic struggle against white minority rule.
The government reacted with brutal force and hundreds of people were killed on that cold Wednesday morning in South Africa's largest township, Soweto.
I was in the crowds on that cold winter's morning and the singing of anti-apartheid liberation songs was powerful.
I saw students with the clinched fists raised to the air chanting Black Power.
When the police fired into the crowds, who like me were wearing school uniforms, it was terrifying. It is the very first time I smelled tear gas and saw a trail of white smoke shoot into the air against a blue sky and coming down to choke us.
But it was Nzima's internationally acclaimed photograph that came to symbolise the protests after it was published on the front pages of major newspapers around the world.
Soon after the uprising, the white minority regime placed Nzima under house arrest for 19 months just for taking that picture.
Time Magazine listed Nzima's iconic photograph as one of the 100 most influential images of all time.
But it was only in 1998 that he finally won a long legal battle to own the copyright of the photograph which he had taken.
It is believed that until then the picture's copyright belonged to the institutions he worked for.
Nzima's son Thulani said this delay cost his father huge amounts of money.
"By the time we got the copyright, those who wanted to use the image for commercial purposes had already extracted the value," he said.
"The second thing is that it took about 18 years for even our own government to finally recognise Sam Nzima as the man behind the picture, while he is still alive.
"In that time, we have seen various applications of the picture, some without even asking for copyrights, and I'm talking even from our government structures."