"The right to express an opinion without consequence is an inherent American principle" Really? 
"But it’s not the prerogative of white people to say when or where or how a black man who has a national stage should or should not direct our attention to that miserable strain of American history." 
Ahh, now we get to the real part.  So basically because "white" people have an opinion, you say no they don't, only blacks have the right?  I'm Arabic, does that mean only Arabs have a right to express an opinion if I chose to do the same as Kaepernick?