John gradually became convinced that white rule was responsible for black poverty , and became active in the anti-apartheid movement . Soon after the Sharpeville massacre in 1960 , John , at that time head of social anthropology at Rhodes University , Port Elizabeth , was detained and interrogated for 110 days , under the " 90-day " detention clause , and then jailed for five years . Banned and house-arrested on his release , he went into exile in England . From 1970-71 , he was Resident Visiting Fellow at King ’s . He then joined the new Bradford University 's sociology department
Sharpeville massacre
Sharpeville massacre
John Laredo