News of Kaepernick's growing marketability, at least in terms of jersey sales, adds an additional layer of complexity to the story of his protest. San Jose Mercury News reporter Mike Rosenberg first noted on Twitter that sales of Kaepernick jerseys had jumped from 20th among 49ers players to first.
Some fans reacted by burning his jersey and other memorabilia on social media in the wake of news breaking about his protest.
Among the quarterback's most vocal critics have been police officers. Kaepernick drew additional criticism after photos surfaced of him wearing socks that depicted police officers as cartoon pigs.
"I have two uncles and friends who are police officers and work to protect and serve ALL people," Kaepernick said on Instagram in defense of the pictures.
Santa Clara Police Chief Michael Sellers offered a rebuke of that position on Saturday, saying that "officers are here to protect the rights of every person, even if we disagree with their position," but also expressed sympathy for the union's sentiment.
Kaepernick was scheduled to speak at Third Baptist Church in San Francisco today in front of a largely black congregation that included members of the NAACP, but he cancelled, citing scheduling concerns.
Some analysts thought that Kaepernick could be cut by the team because of the attention he was receiving, but that has not turned out to be the case so far.
Dave Zirin, a sports editor for The Nation and a historian on sports protests, told ABC News in an interview last week that Kaepernick’s precarious spot on the 49ers roster only served to strengthen the power of his protest.
"He's really risking something by doing this," Zirin said. "It’s all the more admirable that he could be cut by the 49ers."
The 49ers are scheduled to host the Los Angeles Rams in a game on Monday, September 12. He is expected to continue to protest the anthem at that game.
"When there’s significant change and I feel like that flag represents what it's supposed to represent in this country, I’ll stand,” Kaepernick told reporters one week ago.
The Associated Press contributed to this report.