Distinctive salutes
Causes across the political spectrum have long used distinctive salutes to ID themselves.
6 of 8
Mexico City
In this Oct. 16, 1968 file photo, U.S. athletes Tommie Smith, center, and John Carlos, right, stare extend their gloved hands skyward after Smith received the gold and Carlos the bronze for the 200 meter run at the Summer Olympic Games in Mexico City.
Credit: AP Photo
6 of 8
