The the so-called race card really does not exist. 
"... how could anyone believe that people of color would somehow pull the claim out of their hat, as if it were guaranteed to make white America sit up and take notice? If anything, it is likely to be ignored, or even attacked, and in a particularly vicious manner.

That bringing up racism (even with copious documentation) is far from an effective “card” to play in order to garner sympathy, is evidenced by the way in which few people even become aware of the studies confirming its existence. 
 ...if you want to know about whether or not racism is a problem, it would probably do you best to ask the folks who are its targets. They, after all, are the ones who must, as a matter of survival, learn what it is, and how and when it’s operating. 

... race is not a card. It determines whom the dealer is, and who gets dealt. "
http://www.counterpunch.org/2006/04/24/what-kind-of-card-is-race/