I'm white, and have the luxury of not having had to experience racism for most of my life. But two years ago I moved to a country which is only 2% white (and I don't know where those 2% are hiding).
Since moving here, I am thoroughly sick of being called white ALL the time, when it's not the least bit relevant. I get it pointed out to me several times a day, and there is really no need. It comes into every conversation I have. And it's freakin enough already.
Having experienced this, I'm not pointing out anyone's race ever again unless it's absolutely necessary. Not that I ever did. When people point it out, I always have to wonder: "and why do you think it's relevant - what stereotype have you just placed me in in your head?"
I'm not a sensitive person, it just grates after a while. Just my two cents.