Well this seems like an actual case of racism (as opposed to nonsense that's been floating around in the last few years). You can't say things like "black name" and use it in any context as if it was a scientific fact you can build your argument upon. You'd think Bloomberg of all media would know better.

Respectfully: no, the authors did not. The method used can be found in the published paper, which is linked from the submitted article.

edit: clarify a pronoun