Feyisa Lilesa used his global platform to call for an end to oppression.
Just as the Rio Olympics were coming to a close after two weeks of memorable moments, one athlete's political protest may go down as the most historically significant of them all.
It's not soon that anyone will forget the performances of Simone Biles, Katie Ledecky, Simone Manuel, or Michael Phelps. Nor will the Olympic firsts for countries like Kosovo and Fiji become diminished victories lost to time. The same goes for the inspiring display of sportsmanship between New Zealand's Nikki Hamblin and the U.S.'s Abbey D'Agostino.
It's the action that Feyisa Lilesa, an Ethiopian runner, took that may have the largest impact outside the sporting world.