Extending gloved hands skyward in racial protest, U.S. athletes Tommie Smith, center, and John Carlos stare downward during the playing of the Star Spangled Banner at the Summer Olympic Games in Mexico City on Oct. 16, 1968.

Extending gloved hands skyward in racial protest, U.S. athletes Tommie Smith, center, and John Carlos stare downward during the playing of the Star Spangled Banner at the Summer Olympic Games in Mexico City on Oct. 16, 1968.

Extending gloved hands skyward in racial protest, U.S. athletes Tommie Smith, center, and John Carlos stare downward during the playing of the Star Spangled Banner at the Summer Olympic Games in Mexico City on Oct. 16, 1968.

Extending gloved hands skyward in racial protest, U.S. athletes Tommie Smith, center, and John Carlos stare downward during the playing of the Star Spangled Banner at the Summer Olympic Games in Mexico City on Oct. 16, 1968.