Playing the race card is an idiomatic phrase that refers to the act of bringing the issue of race or racism into a debate, perhaps to obfuscate the matter. It is a metaphorical reference to card games in which a trump card may be used to gain an advantage. [Wikipedia]
To the banana sucking, smart and articulate, spear chucking beasts (please fill in your own stereotype here …) looking at this page and fuming because they feel that they have been mortally vilified by Whitey – again, try reading Stupid Black Men: How to Play the Race Card – and Lose. You might just learn something.