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Tommie Smith (right) of the USA wins the men's 200 metres final at the Olympic Games in Mexico City, 16th October 1968. Bronze medallist John Carlos, also of the USA is on the left. Smith and Carlos later caused controvery when they gave the black power salute on the medal podium. (Photo by Douglas Miller/Keystone/Hulton Archive/Getty Images)

Tommie Smith (right) of the USA wins the men's 200 metres final at the Olympic Games in Mexico City, 16th October 1968. Bronze medallist John Carlos, also of the USA is on the left. Smith and Carlos later caused controvery when they gave the black power salute on the medal podium. (Photo by Douglas Miller/Keystone/Hulton Archive/Getty Images)