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TULSA, Okla. – An NFL team’s mascot has been stirring up controversy for several months.

Now, that controversy has forced one tribe to boycott a business.

For several years, Native American groups across the country have been calling for the Washington Redskins to change their mascot.

“If they understood the real, true meaning of the term ‘Redskin,’ they would readily reject this,” said Richard Ray Whittman.

The tribes say the name “Redskins” is derived from the practice of removing the skin of Native people for the purpose of collecting bounties.”

Recently, the U.S. Patent and Trademark Office canceled the Washington Redskins’ trademark registration.

The office says the team’s name is “disparaging to Native Americans.”

Now, the Osage Nation is calling on employees to boycott FedEx because of its relationship with the NFL team.letter

In a letter to all the employees of the Osage Nation, Principal Chief Geoffrey M. Standing Bear said, “We respect the position of the National Congress of American Indians in regard to the relationship between the Washington NFL Team and FedEx. The NCAI has asked FedEx to re-evaluate involvement with an institution which refers to our Native people as “Redskins.”

It goes on to say, “Until the name of this NFL team is changed to something less inflammatory and insulting, I direct all employees to refrain from using FedEx when there is an alternative available.”

FedEx is a main sponsor of the team.

The Washington Redskins’ home field is called ‘FedExField’