The Olympic committee has banned taking the knee at the podium, but using the games as a platform for protest is a controversial topic.
The England football team famously taking the knee and Dina Asher Smith asked how Olympic authorities could sanction an athlete if they too make a stand.
One of the most powerful symbols of protest of all time was made at the Olympics - when two athletes raised a black power salute in 1968.
Sky's Ali Fortescue asked Olympian John Carlos why protests are still controversial at the games.
SUBSCRIBE to our YouTube channel for more videos: www.youtube.com/skynews
Follow us on Twitter: twitter.com/skynews
Like us on Facebook: www.facebook.com/skynews
Follow us on Instagram: www.instagram.com/skynews
For more content go to news.sky.com and download our apps:
Sky News videos are now available in Spanish here/Los video de Sky News están disponibles en español aquí www.youtube.com/channel/skynewsespanol