Two American athletes made history at the 1968 Summer Olympics, but not on the track. They staged a silent protest against racial injustice. Tommie Smith and John Carlos, gold and bronze medalists in the 200-meter sprint, stood with heads bowed and black-gloved fists raised as the national anthem played during the medal ceremony. The Australian silver medalist wore a human rights badge in support. All three would pay a heavy price for their activism...