Some people are planning to wear Tee shirts as they walk around the city. And gestures can be made by athletes on the podium. As Dan said (unscrupulous use of spouse against spouse
Jesse Owens did a fine thing at the Munich Games. It didn't stop what happened afterwards but it is still a solid accusation against the barbarians. Cathy Freeman did a lot to make racist Australians ashamed and helped to nourish essential changes in this society.