Methinks you’re a bit overly sensitive. ThinkProgress isn’t calling you racist just because you’re white. They’re calling you a racist if you’re a racist.
White nationalists tend to be white. Not all whites are white nationalists.
Virtually all whites are privileged in this country, however. And some of us white people are astute enough to recognize that. It’s not a bad thing to be privileged merely by birth, as white people are in our society. It’s bad if you believe this somehow makes you superior to others.