Define a racist.
Any Jews who holds there are different biological “races” is adopting the theory of there having been multiple creations, and is clearly an apikores. Any human being can convert. In America, “racist” usually means believing that some people belong to an “inferior” race based on physical characteristics (such as skin color).
If you define racism more broadly as including a belief that your own ethnic, religious or cultural group is superior (reflecting how racism is defined elsewhere), most people have pride in their own. All nationalism, by definition, is racist.