Here's something important to understand, in context of your recent posts about free speech:
The NFL is a gridiron football (rugby but intentionally smashing each other, essentially) league that is disproportionately peopled by dark-skinned African-Americans because of the way the US's society is set up. Before each game, the players and the audience are treated to the national anthem as a point of tradition, and the common practice is to remove any head coverings, stand, and usually cover your heart.
In light of recent perceived social injustices - whether you agree or not - some players and teams have taken to instead kneeling during the national anthem, in a similarly respectful but noticeably alternative pose. This is to bring attention to these issues and recognition of African-Americans' contributions to the NFL.
In response, your boy Bob and many of his GOP pals, while getting red in the face talking about cancel culture all the time, threatened to ...