This 2010 article helps explain why exposing Taylor Swift was important. She has always sold herself as a victim as part of her career strategy. However with the Kanye West episode, she exploited racist tropes by portraying herself as the White damsel in distress victim of the angry Black man.
Taylor Swift & Kanye West: White Women, Tears, and Coded ImagesBy Karnythia on September 14, 2010 http://www.blogher.com/white-women-tears-and-coded-images