Why isn't racism when you say "White"?

Why isn't racism when you say "White"?

http://www.washingtonpost.com/opinions/white-men-have-much-to-discuss-about-mass-shootings/2013/03/29/7b001d02-97f3-11e2-814b-063623d80a60_story.html

"Imagine if African American men and boys were committing mass shootings month after month, year after year. Articles and interviews would flood the media, and we'd have political debates demanding that African Americans be "held accountable." Then, if an atrocity such as the Newtown, Conn., shootings took place and African American male leaders held a news conference to offer solutions, their credibility would be questionable. The public would tell these leaders that they need to focus on problems in their own culture and communities."

And why s it worse to kill in "mass shootings" then a larger number but individually.

Finally with such an inane opening why would the author have any credibility?

"Imagine if African American men and boys were committing" .. " shootings month after month, year after year" Oh, wait, they are!