A guard stands in front of the construction drapes of a Nike Inc. store in Wenzhou, Zhejiang Province, China. Photographer:Qilai Shen/Bloomberg
A guard stands in front of the construction drapes of a Nike Inc. store in Wenzhou, Zhejiang Province, China. Photographer:Qilai Shen/Bloomberg
FILE - In this Oct. 2, 2016 file photo, from left, San Francisco 49ers outside linebacker Eli Harold, quarterback Colin Kaepernick and safety Eric Reid kneel during the national anthem before an NFL football game against the Dallas Cowboys in Santa Clara, Calif. An arbitrator is sending Kaepernick's grievance with the NFL to trial, denying the league's request to throw out the quarterback's claims that owners conspired to keep him out of the league because of his protests of social injustice.  (AP Photo/Marcio Jose Sanchez, File)
FILE - In this Oct. 2, 2016 file photo, from left, San Francisco 49ers outside linebacker Eli Harold, quarterback Colin Kaepernick and safety Eric Reid kneel during the national anthem before an NFL football game against the Dallas Cowboys in Santa Clara, Calif. An arbitrator is sending Kaepernick's grievance with the NFL to trial, denying the league's request to throw out the quarterback's claims that owners conspired to keep him out of the league because of his protests of social injustice. (AP Photo/Marcio Jose Sanchez, File)
INTERNATIONAL - The backlash started just hours after Colin Kaepernick, the former San Francisco 49ers quarterback who sparked controversy for kneeling during the national anthem, tweeted that he’s starring in Nike Inc.’s iconic “Just Do It” ad campaign.

Following the announcement, the hashtags #BoycottNike and #JustBurnIt started trending on Twitter. Some angry consumers even posted photos and videos of themselves burning their Nike shoes and other gear to protest the company using the divisive figure in its 30th anniversary ad campaign.

The fallout was no surprise but Nike may be betting that the upside of a Kaepernick endorsement is worth angering conservative Americans and supporters of President Donald Trump. Kaepernick -- who sparked a movement among professional athletes when he began taking a knee in 2016 during the anthem to protest police brutality against African Americans -- is embroiled in a lawsuit against the National Football League and accuses it of blacklisting him.

Shares of Nike slipped as much as 2.1 percent to $80.50 in early trading Tuesday. They had climbed 31 percent this year through Friday’s close.

FILE - In this Oct. 2, 2016 file photo, from left, San Francisco 49ers outside linebacker Eli Harold, quarterback Colin Kaepernick and safety Eric Reid kneel during the national anthem before an NFL football game against the Dallas Cowboys in Santa Clara, Calif. An arbitrator is sending Kaepernick's grievance with the NFL to trial, denying the league's request to throw out the quarterback's claims that owners conspired to keep him out of the league because of his protests of social injustice. (AP Photo/Marcio Jose Sanchez, File)


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Still, with the former 49er one of the most popular football players in the U.S. the shoe giant is likely counting on passions to cool.

“The long-term relationship and a contract that benefits both parties over the next 10 years will likely outweigh any current controversy,” said Bloomberg Intelligence analyst Chen Grazutis.

Kaepernick tweeted an image from the campaign with the caption, “Believe in something. Even if it means sacrificing everything.”

Nike is in a fierce battle with rival Adidas AG to sign star athletes. The combined marketing spending of the two companies may reach as much as $10 billion by fiscal 2020.

Nike has also shown its willingness to wade into America’s culture wars. Just a few weeks after Trump’s inauguration last year, the company launched a high-profile “Equality” campaign featuring LeBron James and Serena Williams. The campaign’s ambassadors included Ibtihaj Muhammad, a Muslim American fencer who wears a hijab when competing, and transgender triathlete Chris Mosier.

Despite criticism from Trump and calls by both conservatives and liberals to boycott the league, the NFL is still pulling in billions of dollars. The world’s richest sports league, the NFL distributed a record $8.1 billion to its teams last season and posted an estimated overall revenue of $14 billion.

There is a risk of Nike upsetting its relationship with the NFL, which last week lost an attempt to dismiss Kaepernick’s lawsuit alleging collusion by the league to prevent him from signing with a team.

Still, the league approved a new 10-year agreement in May that will make Nike and Fanatics Inc. the primary suppliers of apparel to teams and fans. As of 2020, Nike will continue to make all on-field NFL apparel, while all adult fan gear will have the Nike logo, but be made and distributed by Fanatics. Until this deal, Nike had been making everything.

- BLOOMBERG