Kevin Carter was a South African photojournalist, famous for his inclusion in the Bang-bang club, award winning photography of atrocities and 1994 suicide.

Click is used here to draw a parallel between Carter's work and his suicide. The click of the camera is likened to the click which can be heard from a car exhaust - the method by which Carter ended his life.

Carter's suicide occurred in July 1994, only 3 months after his receiving of the Pulitzer prize, and aged only 33. He died of carbon monoxide poisoning after funnelling the exhaust fumes of his car through it's front window. An excerpt from his suicide note reads:
"I'm really, really sorry. The pain of life overrides the joy to the point that joy does not exist... depressed ... without phone ... money for rent ... money for child support ... money for debts ... money!!! ... I am haunted by the vivid memories of killings and corpses and anger and pain ... of starving or wounded children, of trigger-happy madmen, often police, of killer executioners ... I have gone to join Ken if I am that lucky."

(Ken being Ken Oosterbroek, another member of the Bang-bang club who died a few months earlier, shot in panic by peacekeeping forces in Thokosa Township, South Africa)

Kaffir is a racist South African term for a black person. Calling Carter a "kaffir lover" was a response to his defending of a black waiter, in a time when South Africa was still under apartheid. Carter was beaten for his trouble.

Vulture-stalked refers to the picture of a famine-starved toddler, stalked by a vulture, for which Carter won the Pulitzer prize in 1994. Image is shown in "Pulitzer prize" meaning, and may be distressing.

White piped lie refers to the opinion that, despite saying otherwise, there was something that Carter could have done to save the child. Carter explained that he was not allowed to touch anyone as it may spread disease.

Kevin Carter won the Pulitzer Prize for his photograph of a famine-starved toddler loomed over by a vulture, as they crawled towards the food bank.

The cheeriness of the colloquial "hi" and the prestigiousness of the Pulitzer Prize contrast terribly with the suffering captured on the other side of the camera.

Aforementioned photo (may be distressing):

The Bang bang club refers to a group of 4 photojournalists who chronicled South Africa's war and struggle with apartheid, so named by SA's Living magazine. It consisted of the eponymous Kevin Carter, as well as Ken Oosterbroek, João Silva and Greg Marinovich.