By Andy Nguyen, PolitiFact reporter

Protests by athletes during sporting events have long been a point of contention in the public eye; some detractors say athletes should stick to sports, while supporters say they should be able to use their platform to spread awareness of an issue.

Ahead of this years Olympics, scheduled to begin July 23, a Facebook post claims Japan has prohibited athletes from making any political expression during the Tokyo Summer Games, including wearing clothing that says "Black Lives Matter."

"Japan has banned all BLM apparel from the Olympics," the June 20 post reads. "No one can kneel or raise fists during the anthems either. I'm proud of Japan."

The post was flagged as part of Facebooks efforts to combat false news and misinformation on its News Feed. (Read more about our partnership with Facebook.)

The post is wrong in that it isnt up to the host country to set what rules athletes have to follow while participating in the games. Instead, thats the responsibility of the International Olympic Committee.

However, the IOC has a provision in its charter, called Rule 50, which prohibits athletes from making any sort of political expression, particularly on medal podiums, in the field of play, and at opening and closing ceremonies. The rule does not target a particular movement or ideology.

The rule states: "No kind of demonstration or political, religious or racial propaganda is permitted in any Olympic sites, venues or other areas." A version of Rule 50 has been in place in the IOC's charter since at least 1975.

Examples of prohibited expressions include displaying any form of political messaging on a persons attire and making any gesture that could be seen as political, such as kneeling or a raised fist.

The IOC did not respond to PolitiFacts request for comment regarding Black Lives Matter apparel at the Olympics.

The focus at the Olympic Games should be on athletes performances, sport and international unity, and "it is a fundamental principle that sport is neutral and must be separate from political, religious or any other type of interference," said Rule 50 guidelines developed by the IOC Athletes Commission.

Rule 50 has been under scrutiny for several years, and the U.S. Olympic and Paralympic Committee recently sought to have the rule amended amid a growing wave of American athletes publicly taking up social justice causes, the Washington Post reported. The IOC reviewed the rule and announced in April it would not be changed.

Olympics officials will allow athletes in Tokyo to wear clothing with more general messaging, like "inclusion," "peace," "equality" and "respect," according to the Associated Press.

The IOC also has said there will be opportunities for athletes "to express their views" during press conferences, interviews, team meetings, and on social media.

Acts of political expression by athletes at the Olympics is nothing new and happened as early as the 1906 Athens Games, when a track and field athlete named Peter OConnor waved a pro-Irish flag while representing Great Britain, according to the BBC.

The most well-known example of an Olympian using the global event to make a political statement may have been at the 1968 Olympics in Mexico City, when U.S. athletes John Carlos and Tommie Smith bowed their heads and raised gloved fists during a medal ceremony at the height of the Black Power movement.

The IOC at the time called their display "a deliberate and violent breach of the fundamental principles of the Olympic spirit" and expelled Carlos and Smith from the games.

The Olympic committee on July 2 announced that it is extending "opportunities for athlete expression" during the Tokyo games. While athletes remain prohibited from demonstrating while on the medal podium, the committee said athletes can express their views:

Olympic rules still require the athletes to express their views in accordance with existing guidelines. For example, the rules still forbid athletes from expressing their views during another team's introduction, or during another country's national anthem. Also, the demonstration must not be "targeted, directly or indirectly, against people, countries, organisations and/or their dignity."

A Facebook post claims, "Japan has banned all (Black Lives Matter) apparel from the Olympics. No one can kneel or raise fists during the anthems either."

The post is partly accurate.

The IOC, not a host country, sets the rules athletes have to follow.

Apparel that says Black Lives Matter may be seen as a form of political expression, and Olympic officials for decades have had a rule prohibiting any form of political expression. Kneeling or raising a fist are forms of prohibited political expression. The IOCs rule does not specifically target Black Lives Matter, or any one ideology or movement.

We rate the post Half True.

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Fact check: Has Japan has banned all Black Lives Matter apparel from the Olympics? - WRAL.com