That is not correct. Minorities cannot be "racist". Racism is more than just hating the color of another persons skin. 2 things are required to be racist: power and prejudice. Minorities lack power...
How do minorities lack power?
You had a two-term black president, though he did nothing for blacks during his terms.
You dominate most sports leagues.
You dominate entertainment/music.
There are more wealthy black men than ever.
There is a Congressional Black Caucus, while a white caucus does not exist.
You have multiple television channels dedicated (most by name) to black people only.
However, if whites did any of the above, it would be racist. You can have your own secret definition, Dbut, but most people see that as being racist.
Like DMac said, any time you judge another by the color of his skin – it's racist. Economic stuff wasn't always even applicable. Was it racist to take slaves from Africa, where there wasn't such a thing as an economy? Blacks did that other blacks.
I think you've just narrowed the goalposts rather unfairly. If I treated you differently than everybody else just because you're black, you'd see it as racism, though it would have no social or financial/economic impact whatsoever.
"Blacks Only" is no different than "Whites Only"