The national anthem is a celebration of slavery

So that's what all these unconscious white supremacists are upset about. It's the American heritage to celebrate slavery, and if you don't then you aren't American. This article shows the history of the anthem, as it's third verse is celebrating the killing of those black slaves who sided with the British in the war of 1812. Kaepernick, likely unaware of these origins, is protesting a country where black men can still be murdered with impunity. Same story, different era.