I'm pointing out that "race" is generally a function of "racism". As long as some people believe and act as if other people belong to a "race", the category has a meaning. Arguing that "Jews are not a race" is like arguing that anti-semitism can't apply to Jews because Arabs are semites. The argument is a mischaracterization of what words mean.

My second point is that it's pure denial to believe that a prejudice of centuries, deeply embedded in culture, can just disappear like that. Things change - and certainly multi-cultural Berlin today is not what it was in the 1940s, but it's not something de-nova either.