6 Music celebrates 50 years since the iconic black power salute at the 1968 Olympics.
Tommie Smith on how it felt to make the Black Power salute and its lasting significance.
Mary Anne Hobbs finds out about a UK university course on the Black Lives Matter movement.
6 Music explores the music that has been inspired by political and social activism.
Cerys is joined by Kevin Le Gendre, author of Don't Stop the Carnival.