"It's never okay to use that word. Unless you're black."
Parody. But still, interesting. And leading to such rewrites as this. (More at President Please.)
This came from Marc Ambinder, who comments on the changing culture in Washington, as when a gathering of black students are told by the White House usher that the White House was built partly by slaves. If a white president had been living there, that would have been an extremely weird thing to say.
The times are a-changing. One of these days, they'll even find a guy to play Obama on SNL.