First off, Neolibralism is broader in scope than just economics, reducing it to such shows a profound lack of knowledge on the subject.
Secondly, even if your limited definition was sufficient, the study of how economic systems affects racism and societal structures is a common topic amongst scholars in her field. Racism and racial divides directly impacted the social structures of the United States, economic systems also directly affect social structures, so (intentionally or otherwise) economic systems will have an effect on the divisions along racial lines.
Feel free to make continue glib assumptions that a respected scholar discussing a topic she spent her life researching must have missed your brilliant point that "economics is a different word than race", but the reality is that you are dismissing a well researched point out of ignorance on both the topic at hand, and the argument being made. But do us all a favor, the next time you don't know what you are talking about, read up or shut up.