The anti-Apartheid activist Steve Biko, leader of the Black Consciousness Movement in South Africa, died in a police cell in 1977. The South African police claimed he'd gone on hunger strike and had starved himself to death, but he had only been in prison a matter of days.

Helen Zille was the journalist who helped uncover the truth of his death - that he had in fact died of a brain hemorrhage due to head injuries. The report she published in the Rand Daily Mail showed that the govenment had lied.

(Image: Members of the Socialist Party of Azania (SOPA) hold a candle light memorial ceremony to mark the death anniversary of the anti-apartheid activist and founder of the Black Consciousness Movement Steve Bantu Biko. Credit: RAJESH JANTILAL/AFP/GettyImages)