On the evening of Oct. 16, 1968, two black U.S. athletes, Tommie Smith and John Carlos, accepted medals for the 200 meter race at the Olympics in Mexico City. As they stepped on the riser to be recognized, Smith and Carlos lowered their heads and raised their fists, staging a protest that drew attention to human rights issues in the United States and across the globe. October 2008 marked the 40th anniversary of this moment in history.