He or she is concluding that the only reason why the author could relate is because of the colour of his skin. And the connection there is that because he's whi

He or she is concluding that the only reason why the author could relate is because of the colour of his skin. And the connection there is that because he's white and has an opinion that this person doesn't agree with, that it's obviously because he's white, and not because of any other reason.