The comedian, who is now more well known for releasing sometimes head-scratching paintings through Twitter than anything else, released a painting celebrating Nike's partnership with Kaepernick.
Kaepernick started kneeling during the national anthem to protest police brutality and racial inequality.
That first ad sparked a backlash from conservatives, many of whom destroyed their Nike products and vowed to boycott the company.
When Kaepernick and I met and talked just six days later, a few hours before the 49ers were set to play the San Diego Chargers, we discussed a lot, but more importantly we listened to each other. He's received a book deal, television deal, several media awards - and now he headlines this ad campaign, which is meant to celebrate the 30th anniversary Nike's famous slogan, "Just do it".
"I don't like what Nike did".More news: Crude oil sells at $78.24 as output peaks
As debates over the Nike ad and National Football League players' on-field activism continue, the National Football League released a statement Tuesday night, stating: "The social justice issues that Colin and other professional athletes have raised deserve our attention and action".
It's the ad seen around the world.
Meanwhile, Trump is clearly enjoying watching the fallout from Nike's endorsement of the leader of the movement he's enjoyed railing against since it first got going.
Trump was interviewed by Fox News before a rally Thursday in Billings, Montana. Personally, I do not endorse Kaepernick's method of protest but I absolutely support his right to do so. The league froze the policy after the players' union filed a grievance.
"I think there's a huge need for us to turn the attention to not only the issues, but what players are actually doing in their communities to promote change", he said. Owners approved a policy requiring players to stand if they are on the sideline during the song, allowing them to stay off the field if they wish.