A white guy who is not a racist over his race or identity doesn't mean that he can be a racist of other racial groups. Why? Because he doesn't want to support the race of his/her own group. Now, if these people who own a non-racist white identity and they do not support their own group or race; it is evitable to say that these group can be a racist of other groups. And even if it is true on some rare cases, but it is still ambiguous.
Non-racist identity is the same no matter what. Having a "white" non-racist identity doesn't mean anything because whites are only the majority race in Europe, the United States, Canada and Australia. Everywhere else, whites would be considered minorities themselves. Non-racist means the same thing no matter what ethic group to which you belong.
I would have assume being a non-racist is pretty much the same regardless of what race you are. I think this is the important part of the race-relations, realizing that deep down we are all humans and we are all equal. Each race has been brought up with prejudices that they have to overcome.
No, having a non-racist white identity is not the same thing as the non-racist identity of a member of any other racial group, because we all see things as our perspective. A person who is born white will naturally see things from a different perspective as a person who is born a minority. It does not make one perspective better or worse, just different.
No, it is way different to be white and be labeled as not racist. I think that it is really hard to be a white person and not be a little bit racist, since deep down we think that we are the best race that lives on this planet today.