Fist salute
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John Carlos 'would repeat Olympic fist protest'

At the Mexico City Olympics in 1968 two black medal winners made a significant political statement by raising their fists on the winners' podium.

Tommie Smith and John Carlos were protesting against racial discrimination in the US.

Now, more than four decades later, Carlos says that he would do it again, despite the backlash.

Tim Hague reports.