It was July 1963, and on Pennsylvania Avenue in front of the White House, a brutal melee suddenly erupted between rival groups of pickets who were on opposite sides of a proposed nuclear test-ban treaty. As Washington Post reporter Stephen C. Rogers described the scene, the protesters began "slugging, kicking and gouging" one another, until baton-wielding policemen waded into the fray to separate them.
As the officers dragged the most vociferous brawlers away, a man in a bright-blue baseball cap suddenly stood up in the center of the confrontation. "All right! All right! All right!" he shouted, and the fighting abruptly stopped.