From Merriam-Webster
Race: "a category of humankind that shares certain distinctive physical traits."
Nationality: "a people having a common origin, tradition, and language and capable of forming or actually constituting a nation-state."
Dutch: "of or relating to the Netherlands or its inhabitants."
That may be the dictionary definition, but my point was that 'race' is mostly a social construct. Go back a couple of centuries and it was normal for (Europeans) to talk about the 'Irish' race, the 'Spanish' race, the 'German' race and even the 'Dutch' race.