When South African schoolchildren marched in protest against having to study Afrikaans in 1976, they were gunned down by the police.The killings sparked a cycle of protests across the country against the racist apartheid regime.In 2010, march organiser Bongi Mkhabela told Alan Johnston about her memories of the Soweto uprising.(Photo: Protestors on the march. Credit: Bongani Mnguni/CityPress/Gallo Images/Getty Images)