We can't talk. Or, rather, we can only talk in canned narratives, as Glenn C. Loury writes in the NYT:

[T]his convenient story line is reflected in an all-too-familiar narrative: “Here we are, 45 years after the Civil Rights Act of 1964, with a black man in the White House. And yet, it is still the case that a distinguished Harvard professor, standing on his own front step, can be treated like a common criminal simply because he’s black. Obviously it is way too soon to declare that we have entered a post-racial era ... .” As far as I am concerned, the ubiquity of this narrative shows that we are incapable of talking straight with one another about race. And this much-publicized incident is emblematic of precisely nothing at all. Rather, the Gates arrest is a made-for-cable-TV tempest in a teapot.

Therefore, as many people use the Gates incident to teach lessons about race, the reality is that objective people are left to wonder whether the case was about race at all.