Dog whistle or whistling in the dark?

Apparently dog whistle racism is when the slurs, slams or words are so subtle, so coded, so obscure, that only Republican politicians say them and only black people and Democrats understand them, if indeed they can hear them. Therefore, calling Obama the food stamp president is racist not because with his failed policies more Americans are using SNAP than ever before, but because he is black and to criticize him is code racism. Hello. He has criticized Romney for telling students to borrow from their parents rather than the government! Most people using food stamps are white. 40% of black women are having abortions.  Do the math. Americans elected him in 2008; he couldn't have been elected without the white vote. But what was historic and post racial in 2008 is now racist as millions try to abandon him because he has failed. He has broken his promises, and minorities particularly have been hurt. That's not code--that's the truth.